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{{Short description|American scientist and activist (1901–1994)}} | |||
'''Linus Carl Pauling''' (], ]-], ]) was an ] ]. He won a ] and a ]. | |||
{{Use mdy dates|date=July 2023|cs1-dates=y}} | |||
{{Use American English|date=April 2022}} | |||
{{Infobox scientist | |||
| image = File:Linus Pauling in the 1940s.jpg | |||
| caption = Pauling in the 1940s | |||
| honorific_suffix = {{post-nominals|country=GBR|size=100%|ForMemRS}} | |||
| birth_name = Linus Carl Pauling | |||
| birth_date = {{birth date|1901|2|28}} | |||
| birth_place = ], U.S. | |||
| nationality = <!-- use only when necessary per ] --> | |||
| death_date = {{nowrap|{{death date and age|1994|8|19|1901|2|28}}}} | |||
| death_place = ], California, U.S. | |||
| spouse = {{marriage|]|1923-06-17|1981-12-07|end=d.}} | |||
| children = 4 | |||
| field = {{ubl|]|]}} | |||
| education = {{ubl|] (])|] (])}} | |||
| work_institution = {{collapsible list|title={{nobold|''As faculty member''}} | |||
|] (1927–1963) | |||
|] (1967–1969) | |||
|] (1969–1975) | |||
}} | |||
{{collapsible list|title={{nobold|''As fellow''}} | |||
|] (1937–1938) | |||
|] (1948) | |||
|] (1963–1967) | |||
}} | |||
| doctoral_advisor = {{ubl|]|]<ref name="mathgene">{{MathGenealogy|id=113591}}</ref>}} | |||
| academic_advisors = {{ubl|]|]<ref name="Guggenheim">{{Cite web |title=A Guggenheim Fellow in Europe during the Golden Years of Physics (1926–1927) |url=http://scarc.library.oregonstate.edu/coll/pauling/chronology/page9.html |url-status=live |archive-url=https://web.archive.org/web/20211028235401/http://scarc.library.oregonstate.edu/coll/pauling/chronology/page9.html |archive-date=October 28, 2021 |access-date=May 27, 2015 |website=] |language=en-US}}</ref>}} | |||
| doctoral_students = {{plainlist| | |||
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*]<ref name="mathgene" /> | |||
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}} | |||
| notable_students = ''Undergrads:'' | |||
{{plainlist | | |||
* ] | |||
}} | |||
''Post-docs:'' | |||
{{plainlist | | |||
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}} | |||
| thesis_title = The Determination with X-Rays of the Structures of Crystals | |||
| thesis_year = 1925<ref name="paulingphd">{{Cite thesis |last=Pauling |first=Linus |title=The determination with x-rays of the structures of crystals |date=1925 |degree=PhD |publisher=] |url=https://thesis.library.caltech.edu/1791/ |doi=10.7907/F7V6-4P98 |language=en |author-mask=4 |access-date=April 13, 2022}}</ref> | |||
| thesis_url = https://thesis.library.caltech.edu/1791 | |||
| known_for = {{collapsible list|title={{nobold|''See list''}}|{{ubl|item_style={{longitem}} | |||
|] | |||
|] | |||
|] | |||
|] | |||
|] | |||
|] | |||
|] | |||
|] | |||
|] | |||
|] | |||
|] | |||
|Elucidating ]s and ]s | |||
|] | |||
|] | |||
|]ing | |||
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|Advocating ] | |||
}}}} | |||
| prizes = {{ubl|item_style={{longitem}} | |||
| ] (1931) | |||
| ] (1931) | |||
| ] (1947) | |||
| ] (1954) | |||
| ] (1962) | |||
| ] (1967) | |||
| ] (1968–1969) | |||
| ] (1974) | |||
| ] (1977) | |||
| ] (1979) | |||
| ] (1984) | |||
| ] (1989) | |||
}} | |||
| signature = Linus Pauling signature.svg | |||
| footnotes = The only person to win two unshared Nobel Prizes. | |||
}} | |||
'''Linus Carl Pauling''' {{Post-nominals|country=GBR|FRS}} ({{IPAc-en|ˈ|p|ɔː|l|ɪ|ŋ}} {{respell|PAW|ling}}; February 28, 1901{{snd}}August 19, 1994)<ref name="ChemNobel">{{Cite web |title=Linus Pauling: Facts |url=https://www.nobelprize.org/prizes/chemistry/1954/pauling/facts/ |url-status=live |archive-url=https://web.archive.org/web/20220404140945/https://www.nobelprize.org/prizes/chemistry/1954/pauling/facts/ |archive-date=April 4, 2022 |access-date=April 13, 2022 |website=Nobel Prize |language=en}}</ref> was an American ], ], ], ], author, and educator. He published more than 1,200 papers and books, of which about 850 dealt with scientific topics.<ref name="VolumeI">{{Cite book |last=Pauling |first=Linus |title=Selected papers of Linus Pauling |date=1997 |publisher=] |isbn=978-981-02-2939-9 |editor-last=Pauling |editor-first=Linus Jr. |edition=Volume I |location=] |page=xvii |author-mask=4}}</ref> '']'' called him one of the 20 greatest scientists of all time.<ref name="Horgan">{{Cite magazine |last=Horgan |first=J |year=1993 |title=Profile: Linus C. Pauling – Stubbornly Ahead of His Time |magazine=] |volume=266 |issue=3 |pages=36–40 |bibcode=1993SciAm.266c..36H |doi=10.1038/scientificamerican0393-36}}</ref> For his scientific work, Pauling was awarded the ] in 1954. For his peace activism, he was awarded the ] in 1962. He is one of five people to have ] (the others being ], ], ], and ]).<ref name="Nobel">{{Nobelprize|access-date=April 30, 2020}}</ref> Of these, he is the only person to have been awarded two unshared Nobel Prizes,<ref>{{Cite web |date=April 12, 2022 |orig-date=2009-10-05 |title=Nobel Prize Facts |url=https://www.nobelprize.org/nobel_prizes/facts/ |url-status=live |archive-url=https://web.archive.org/web/20170111161907/http://www.nobelprize.org/nobel_prizes/facts/ |archive-date=January 11, 2017|access-date=April 13, 2022 |website=Nobel Prize |language=en }}</ref> and one of two people to be awarded Nobel Prizes in different fields, the other being ].<ref name="Nobel" /> | |||
== Early life == | |||
Pauling was one of the founders of the fields of ] and ].<ref name="natureobit">{{Cite journal |last=Rich |first=Alexander |author-link=Alexander Rich |year=1994 |title=Linus Pauling (1901–1994) |journal=] |volume=371 |issue=6495 |pages=285 |bibcode=1994Natur.371..285R |doi=10.1038/371285a0 |pmid=8090196 |doi-access=free |s2cid=8923975}}</ref> His contributions to the theory of the chemical bond include the concept of ] and the first accurate scale of ] of the elements. Pauling also worked on the structures of biological molecules, and showed the importance of the ] and ] in ]. Pauling's approach combined methods and results from ], ] building, and quantum chemistry. His discoveries inspired the work of ], ], ], and ] on the structure of ], which in turn made it possible for geneticists to crack the DNA code of all organisms.<ref name="Contributions to DNA double-helix discovery">{{Cite book |last=Gribbin |first=John |title=The Scientists: A History of Science Told Through the Lives of Its Greatest Inventors |date=2004 |publisher=] |isbn=978-0-8129-6788-3 |location=New York City |pages=558–569 |language=en |ol=8020832M |author-link=John Gribbin}}</ref> | |||
Pauling was born in ]. His father, an unsuccessful druggist, moved his family to a number of different cities in ] from ] to ], finally returning to Portland that year. When the elder Pauling died in ] of a perforated ], Linus' mother was left to care for him and two younger siblings. | |||
In his later years, he promoted ], as well as ], ],<ref name="isbn0-399-50764-7">{{Cite book |last=Stone |first=Irwin |author-link=Irwin Stone |url=https://archive.org/details/healingfactorvit0000ston |title=The healing factor: "vitamin C" against disease |date=1982 |publisher=Perigee Books |isbn=978-0-399-50764-9 |location=New York|language=en |oclc=10169988 |ol=9567597M |via=]}}</ref> and ]s, especially ] (commonly known as Vitamin C). None of his ideas concerning the medical usefulness of large doses of vitamins have gained much acceptance in the mainstream scientific community.<ref name="Horgan" /><ref name="Offit">{{Cite magazine |last=Offit |first=Paul |author-link=Paul Offit |date=July 19, 2013 |title=The Vitamin Myth: Why We Think We Need Supplements |url=https://www.theatlantic.com/health/archive/2013/07/the-vitamin-myth-why-we-think-we-need-supplements/277947/ |magazine=] |language=en |issn=2151-9463 |oclc=936540106 |access-date=July 19, 2013 |url-access=subscription}}</ref> He was married to the American human rights activist ]. | |||
Pauling was a voracious reader as a child, and at one point his father wrote a letter to a local paper inviting suggestions of additional books that would occupy his time. A friend, Lloyd Jeffress, had a small ] laboratory in his bedroom when Pauling was in ], and Jeffress' laboratory experiments inspired Pauling to plan to become a ]. | |||
== Early life and education == | |||
In high school, Pauling continued to experiment in chemistry, borrowing much of the equipment and materials from an abandoned steel company near which his grandfather worked as a night watchman. | |||
] | |||
Linus Carl Pauling was born on February 28, 1901, in ],<ref name="frs">{{Cite journal |last=Dunitz |first=Jack D. |author-link=Jack D. Dunitz |date=1996 |title=Linus Carl Pauling. 28 February 1901–19 August 1994 |journal=] |language=en-gb |volume=42 |issue=9 |pages=316–326 |doi=10.1098/rsbm.1996.0020 |pmid=11619334 |doi-access=free}}</ref><ref name="childhood">{{Cite web |title=Linus Pauling's Childhood (1901–1910) |url=http://scarc.library.oregonstate.edu/coll/pauling/chronology/page3.html |url-status=live |archive-url=https://web.archive.org/web/20220407144827/http://scarc.library.oregonstate.edu/coll/pauling/chronology/page3.html |archive-date=April 7, 2022 |access-date=April 25, 2013 |website=] |language=en-us}}</ref> the firstborn child of Herman Henry William Pauling (1876–1910) and Lucy Isabelle "Belle" Darling (1881–1926).<ref name="Nature">{{Cite book |last=Hager |first=Thomas |author-link=Thomas Hager |url=https://archive.org/details/forceofnaturelif00hage |title=Force of Nature: The Life of Linus Pauling |date=1995 |publisher=] |isbn=978-0-684-80909-0 |via=]}}</ref>{{rp|22}} He was named "Linus Carl", in honor of Lucy's father, Linus, and Herman's father, Carl.<ref name="MeadHager">{{Cite book |title=Linus Pauling: Scientist and Peacemaker |date=2001 |publisher=] |isbn=978-0-87071-489-4 |editor-last=Mead |editor-first=Clifford |editor-last2=Hager |editor-first2=Thomas |editor-link2=Thomas Hager}}</ref>{{rp|8}} His ancestry included German and English.<ref>{{Cite web |title=Linus Pauling: Biographical |url=https://www.nobelprize.org/prizes/chemistry/1954/pauling/biographical/ |url-status=live |archive-url=https://web.archive.org/web/20220318142845/https://www.nobelprize.org/prizes/chemistry/1954/pauling/biographical/ |archive-date=March 18, 2022 |access-date=September 27, 2021 |website=Nobel Prize |language=en-US}}</ref><ref>{{Cite book |last=Dunitz |first=Jack D. |author-link=Jack D. Dunitz |url=https://www.nap.edu/read/5737/chapter/13 |title=Biographical Memoirs |date=1997 |publisher=] |isbn=978-0-309-05738-7 |volume=71 |pages=221–261 |language=en |chapter=Linus Carl Pauling |doi=10.17226/5737 |archive-url=https://web.archive.org/web/20211028051456/https://www.nap.edu/read/5737/chapter/13 |archive-date=October 28, 2021 |url-status=live |access-date=September 27, 2021 }}</ref> | |||
Pauling failed to take some required American history courses and did not qualify for his high school diploma. The school awarded him the diploma 45 years later, after he had won two ]s! | |||
In 1902, after his sister Pauline was born, Pauling's parents decided to move out of Portland to find more affordable and spacious living quarters than their one-room apartment.<ref name="GoGo">{{Cite book |last1=Goertzel |first1=Ted |author1-link=Ted Goertzel |url=https://archive.org/details/linuspaulinglife0000goer_i4n1 |title=Linus Pauling: A Life in Science and Politics |last2=Goertzel |first2=Ben |date=1995 |publisher=Basic Books |isbn=978-0-465-00672-4 |language=en |via=]}}</ref>{{rp|4}} Lucy stayed with her husband's parents in Oswego until Herman brought the family to ], where he worked briefly as a traveling salesman for the Skidmore Drug Company. Within a year of Lucile's birth in 1904, Herman Pauling moved his family to ] where he opened his own drugstore.{{r|GoGo|p=4}} He moved his family to ], in 1905.{{r|GoGo|p=5}} By 1906, Herman Pauling was suffering from recurrent ]. He died of a perforated ] on June 11, 1910, leaving Lucy to care for Linus, Lucile and Pauline.{{r|MeadHager|p=9}} | |||
== College and graduate school == | |||
Pauling attributes his interest in becoming a chemist to being amazed by experiments conducted by a friend, ], who had a small chemistry lab kit.{{r|GoGo|p=17}} He later wrote: "I was simply entranced by chemical phenomena, by the reactions in which substances, often with strikingly different properties, appear; and I hoped to learn more and more about this aspect of the world."<ref name="Abrams">{{Cite book |last=Abrams |first=Irwin |url={{GBurl|id=ny77bPwKxaUC|page=198}} |title=The Nobel Peace Prize and the laureates : an illustrated biographical history, 1901–1987 |date=1988 |publisher=G.K. Hall |isbn=978-0-8161-8609-9 |edition=2. print. |location=]}}</ref> | |||
In ] Pauling entered the Oregon Agricultural College in ], now ]. Because of financial needs, he had to work full-time while attending a full schedule of classes. After his sophomore year, he planned to take a job in Portland to help support his mother, but the college offered him a position teaching ] (a course Pauling had just finished taking as a student). This allowed him to continue his studies at OAC. | |||
In high school, Pauling conducted chemistry experiments by scavenging equipment and material from an abandoned steel plant. With an older friend, Lloyd Simon, Pauling set up Palmon Laboratories in Simon's basement. They approached local dairies offering to perform butterfat samplings at cheap prices but dairymen were wary of trusting two boys with the task, and the business ended in failure.{{r|GoGo|p=21}} | |||
In his last two years at OAC, Pauling became aware of the work of ] and ] on the ] of ]s and their ] to form ]s. He decided to focus his research on how the ] and ] of substances are related to the structure of the atoms of which they are composed, becoming one of the founders of the new science of ]. | |||
At age 15, the high school senior had enough credits to enter ] (OSU), known then as Oregon Agricultural College.{{r|GoGo|p=22}} Lacking two American history courses required for his ], Pauling asked the school principal if he could take the courses concurrently during the spring semester. Denied, he left ] in June without a diploma.{{r|Nature|p=48}} The school awarded him an honorary diploma 45 years later, after he was awarded two Nobel Prizes.<ref name="Nobel" /><ref>{{Cite encyclopedia |year=1998 |title=Pauling, Linus |encyclopedia=Encyclopedia of World Biography |publisher=] |editor-last=Bourgoin |editor-first=Suzanne M. |volume=12 |page=150 |isbn=978-0-7876-2221-3 |oclc=498136139 |ol=24962233M |editor-first2=Paula K. |editor-last2=Byers}}</ref><ref>{{cite news |title=Pauling Finally Gets High School Diploma |url=https://chroniclingamerica.loc.gov/lccn/sn83045462/1962-06-19/ed-1/seq-1/ |access-date=August 3, 2022 |work=] |date=June 19, 1962 |at=p. 1 col 6}}</ref> | |||
In his senior year he met Ava Helen Miller, a fellow student, and he married her on ], ]; they had three sons and a daughter. | |||
Pauling held a number of jobs to earn money for his future college expenses, including working part-time at a grocery store for {{currency|8|USD}} per week (equivalent to {{currency|{{inflation|US|8|1916|r=-1}}|USD}} in {{inflation/year|US}}). His mother arranged an interview with the owner of a number of manufacturing plants in Portland, Mr. Schwietzerhoff, who hired him as an apprentice machinist at a salary of {{currency|40|USD}} per month (equivalent to {{currency|{{inflation|US|40|1916|r=-1}}|USD}} in {{inflation/year|US}}). This was soon raised to {{currency|50|USD}} per month.{{r|GoGo|p=23}} Pauling also set up a photography laboratory with two friends.{{r|GoGo|p=24}} In September 1917, Pauling was finally admitted by Oregon State University. He immediately resigned from the machinist's job and informed his mother, who saw no point in a university education, of his plans.{{r|GoGo|p=25}} | |||
In ], Pauling graduated from OAC and went to graduate school at the ] ("CalTech") in ]. His graduate research involved the use of ] to determine ] structure. He published seven papers on the crystal structure of ]s while he was at CalTech. He received his ] degree, ''summa cum laude'', in ]. | |||
===Higher education=== | |||
== Early scientific career == | |||
], 1922]] | |||
In his first semester, Pauling registered for two courses in chemistry, two in mathematics, mechanical drawing, introduction to mining and use of explosives, modern English prose, gymnastics and military drill.{{r|GoGo|p=26}} His roommate was childhood pal and lifelong best friend Lloyd Jeffress.<ref name=Linus>{{cite web|last1=Pauling|first1=Linus|title=Life with Lloyd Jeffress, June 5, 1986|url=https://paulingblog.wordpress.com/2009/07/02/paulings-best-friend-lloyd-jeffress/|website=The Pauling Blog|publisher=Oregon State University Libraries Special Collections and Archives Research Center|access-date=1 June 2016|date=2009-07-02}}</ref> He was active in campus life and founded the school's chapter of the ] fraternity.<ref>{{Cite web |last=Swanson |first=Stephen |date=October 3, 2000 |title=OSU fraternity to donate Pauling treasures to campus library |url=http://oregonstate.edu/ua/ncs/archives/2000/oct/osu-fraternity-donate-pauling-treasures-campus-library |url-status=dead |archive-url=https://web.archive.org/web/20160303202915/http://oregonstate.edu/ua/ncs/archives/2000/oct/osu-fraternity-donate-pauling-treasures-campus-library |archive-date=March 3, 2016 |access-date=April 29, 2013 |website=] |language=en}}</ref> After his second year, he planned to take a job in Portland to help support his mother. The college offered him a position teaching ], a course he had just finished taking himself. He worked forty hours a week in the laboratory and classroom and earned {{currency|100|USD}} a month (equivalent to {{currency|{{inflation|US|100|1920|r=-2}}|USD}} in {{inflation/year|US}}), enabling him to continue his studies.{{r|GoGo|p=29}} | |||
He then traveled to Europe to study under ] in ], ] in ], and ] in ]. All three were working in the new field of ]. It was while he was studying at OAC that Pauling had first been exposed to quantum mechanics, and he was now interested in seeing how it might help in the understanding of Pauling's chosen field of interest, the ] of ]s and ]s. He devoted the two years of his European trip to this work, and decided to make this the focus of his future research, becoming one of the first scientists in the field of ]. In ], he took a new position as an assistant professor at CalTech in ]. | |||
In his last two years at school, Pauling became aware of the work of ] and ] on the ] of atoms and their ] to form ]s.{{r|GoGo|p=29}} He decided to focus his research on how the ] and ] of substances are related to the structure of the atoms of which they are composed, becoming one of the founders of the new science of quantum chemistry.{{citation needed|date=August 2023}} | |||
Pauling began his faculty career at CalTech with a very productive five years, both continuing with his X-ray crystal studies and performing quantum mechanical calculations on atoms and molecules. He published approximately fifty papers in those five years. In ] he was promoted to associate professor, and in ], to full professor. By ], the American Chemical Society awarded Pauling the ] Prize for the most significant work in pure science by a person 30 years of age or under. | |||
Engineering professor Samuel Graf (1887–1966)<ref>{{cite web|url=https://engineering.oregonstate.edu/alumni-partners/oregon-stater-awards/searchable-awards-database/samuel-graf-engineering-hall-fame |title=Samuel Graf : Engineering Hall of Fame - 1998 | College of Engineering | Oregon State University |date=3 October 2022 }}</ref><ref>{{cite web|url=https://www.newspapers.com/article/corvallis-gazette-times/31584297/ |title=''Long-Time OSU Faculty Man, Sam Graf, Dies'' {Article clipped from Corvallis Gazette-Times) |website=newspapers.com |date=25 July 1966 }}</ref> selected Pauling to be his teaching assistant in a mechanics and materials course.{{r|GoGo|p=29}}<ref name="OSUArchives">{{Cite web |title=Pauling's Years as an Undergraduate at Oregon Agricultural College, Part 2 (1919–1922) |url=http://scarc.library.oregonstate.edu/coll/pauling/chronology/page6.html |url-status=live |archive-url=https://web.archive.org/web/20211031065844/http://scarc.library.oregonstate.edu/coll/pauling/chronology/page6.html |archive-date=October 31, 2021 |access-date=May 27, 2015 |website=]}}</ref><ref name="Marinacci">{{Cite book |last=Pauling |first=Linus |url=https://archive.org/details/linuspaulinginhi0000paul |title=Linus Pauling: in his own words : selected writings, speeches, and interviews |date=1995 |publisher=] |isbn=978-0-684-81387-5 |editor-last=Marinacci |editor-first=Barbara |location=New York City |page=39 |language=en-us |author-mask=4 |access-date=May 27, 2015 |url-access=registration |via=]}}</ref> During the winter of his senior year, Pauling taught a chemistry course for ] majors. It was in one of these classes that Pauling met his future wife, ].{{r|GoGo|p=31}}{{r|Marinacci|p=41}}<ref>{{Cite web |title=Linus Pauling Biographical Timeline |url=http://lpi.oregonstate.edu/lpbio/timeline.html |url-status=live |archive-url=https://web.archive.org/web/20220302113523/https://lpi.oregonstate.edu/about/linus-pauling-biographical-timeline |archive-date=March 2, 2022 |access-date=November 10, 2011 |website=] |publisher=] |language=en-us}}</ref><ref name="AvaBook">{{Cite news |last=Richard |first=Terry |date=May 3, 2013 |title=Ava Helen Pauling, wife of Linus Pauling, subject of biography by Corvallis author Mina Carson |language=en |work=] |url=http://www.oregonlive.com/books/index.ssf/2013/05/ava_helen_pauling_wife_of_linu.html |url-status=live |url-access=subscription |access-date=June 2, 2015 |archive-url=https://web.archive.org/web/20210513195013/https://www.oregonlive.com/books/2013/05/ava_helen_pauling_wife_of_linu.html |archive-date=May 13, 2021 |issn=8750-1317}}</ref> | |||
In the summer of ] Pauling made another European trip, learning about the use of ]s in ] studies similar to the ones he had performed with X rays. With a student of his, '''L. O. Brockway''', he built an electron diffraction instrument at CalTech and used it to study the molecular structure of a large number of chemical substances. | |||
In 1922, Pauling graduated with a degree in ]. He went on to graduate school at the ] (Caltech) in ], under the guidance of ] and ].<ref name="mathgene" /> His graduate research involved the use of ] to determine the structure of ]s. He published seven papers on the ] of minerals while he was at Caltech. He received his PhD in ] and ],<ref name="paulingphd" /> ], in 1925.<ref>{{Cite web |date=June 12, 1925 |title=Commencement 1925 California Institute of Technology Pasadena |url=http://caltechcampuspubs.library.caltech.edu/2537/1/1925.pdf |url-status=live |archive-url=https://web.archive.org/web/20201101163715/http://caltechcampuspubs.library.caltech.edu/2537/1/1925.pdf |archive-date=November 1, 2020 |access-date=March 29, 2013 |publisher=]}}</ref> | |||
He introduced the concept of ] in ]. Using the various properties of ]s, such as the energy required to break ] and the ] of molecules, he established a scale and an associated numerical value for most of the elements, the ], which is useful in predicting the nature of bonds between atoms in molecules. (Another measure of electronegativity was defined by ]; the ] generally correlates with Pauling's, but not perfectly. The Pauling scale is the more frequently cited electronegativity scale.) | |||
== Career == | |||
== Work on the nature of the chemical bond == | |||
{{external media |width=190px | float = right | headerimage= ] | video1 = , Oregon Experience, ]}}In 1926, Pauling was awarded a ] to travel to Europe, to study under German physicist ] in Munich, Danish physicist ] in Copenhagen and Austrian physicist ] in ]. All three were experts in the new field of ] and other branches of physics.<ref name="Guggenheim" /> Pauling became interested in how quantum mechanics might be applied in his chosen field of interest, the ] of atoms and molecules. In Zürich, Pauling was also exposed to one of the first quantum mechanical analyses of bonding in the ] molecule, done by ] and ].<ref name="Realism">{{Cite conference |date=December 9, 2010 |orig-date=1996-10-31 |title=Realism and anti-realism in the philosophy of science |url={{GBurl|id=mvYIkgAACAAJ|page=161}} |conference=Beijing International Conference 1992 |location=] |publisher=] |page=161 |isbn=978-90-481-4493-8 |ol=28281917M |access-date=May 27, 2015 |editor1-last=Cohen |editor1-first=Robert S. |editor2-last=Hilpinen |editor2-first=Risto |editor3-last=Qiu |editor3-first=Ren-Zong}}</ref> Pauling devoted the two years of his European trip to this work and decided to make it the focus of his future research. He became one of the first scientists in the field of quantum chemistry and a pioneer in the application of quantum theory to the structure of molecules.<ref name="PNNL">{{Cite web |title=About Linus Pauling |url=https://www.pnnl.gov/projects/linus-pauling-distinguished-postdoctoral-fellowship/about |url-status=live |archive-url=https://web.archive.org/web/20220302175453/https://www.pnnl.gov/projects/linus-pauling-distinguished-postdoctoral-fellowship/about |archive-date=March 2, 2022 |access-date=April 13, 2022 |website=] |language=en}}</ref> | |||
In 1927, Pauling took a new position as an assistant professor at ] in ].<ref name="OH">{{Cite book |last=Pauling |first=Linus |url=https://digital.sciencehistory.org/works/5h73px42w |title=Oral history interview with Linus C. Pauling |date=April 6, 1987 |publisher=] |location=] |publication-place=] |language=en |author-mask=4 |access-date=April 13, 2022 |archive-url=https://web.archive.org/web/20210816110527/https://digital.sciencehistory.org/works/5h73px42w |archive-date=August 16, 2021 |url-status=live |interviewer-last=Sturchio |interviewer-first=Jeffrey L.}}</ref> He launched his faculty career with a very productive five years, continuing with his ] crystal studies and also performing quantum mechanical calculations on atoms and molecules. He published approximately fifty papers in those five years, and created the five rules now known as ].<ref>{{Cite journal |last=Pauling |first=Linus |author-mask=4 |date=April 1, 1929 |title=The principles determining the structure of complex ionic crystals |journal=] |volume=51 |issue=4 |pages=1010–1026 |doi=10.1021/ja01379a006|bibcode=1929JAChS..51.1010P }}</ref><ref name="Pauling1960">{{Cite book |last=Pauling |first=Linus |url={{GBurl|id=L-1K9HmKmUUC}} |title=The nature of the chemical bond and the structure of molecules and crystals; an introduction to modern structural chemistry |date=January 31, 1960 |publisher=] |isbn=978-0-8014-0333-0 |edition=3rd |location=] |pages=543–562 |ol=26811428M |author-mask=4 |orig-date=1939}}</ref> By 1929, he was promoted to associate professor, and by 1930, to full professor.<ref name="OH" /> In 1931, the ] awarded Pauling the Langmuir Prize for the most significant work in pure science by a person 30 years of age or younger.<ref>{{Cite web |last=Hager |first=Thomas |author-link=Thomas Hager |date=December 2004 |title=The Langmuir Prize |url=http://scarc.library.oregonstate.edu/coll/pauling/bond/narrative/page28.html |url-status=live |archive-url=https://web.archive.org/web/20201212140745/http://scarc.library.oregonstate.edu/coll/pauling/bond/narrative/page28.html |archive-date=December 12, 2020 |access-date=February 29, 2008 |website=] |language=en}}</ref> The following year, Pauling published what he regarded as his most important paper, in which he first laid out the concept of ] and analyzed the ] of the ] atom.<ref>{{Cite journal |last=Pauling |first=Linus |author-mask=4 |date=March 1, 1932 |title=The nature of the chemical bond. III. The transition from one extreme bond type to another |journal=] |volume=54 |issue=3 |pages=988–1003 |doi=10.1021/ja01342a022|bibcode=1932JAChS..54..988P }}</ref> | |||
In the 1930s he began publishing papers on the nature of the ], leading to his famous textbook on the subject published in ]. It is based primarily on his work in this area that he received the ] in ] "for his research into the nature of the chemical bond and its application to the elucidation of the structure of complex substances". | |||
At Caltech, Pauling struck up a close friendship with ] ] at the ], who spent part of his research and teaching schedule as a visitor at Caltech each year.<ref name="Nature" /><ref name="Oppenheimer">{{Cite book |last=Monk |first=Ray |url={{GBurl|id=EkJ9aWTjWjUC|page=203}} |title=Robert Oppenheimer : a life inside the center |date=March 11, 2014 |publisher=] |isbn=978-0-385-72204-9 |edition=First Anchor Books |page=203 |ol=32935915M |author-link=Ray Monk |orig-date=2012}}</ref> Pauling was also affiliated with Berkeley, serving as a visiting lecturer in physics and chemistry from 1929 to 1934.<ref>{{Cite web |title=Early Career at the California Institute of Technology (1927–1930) |url=http://scarc.library.oregonstate.edu/coll/pauling/chronology/page10.html |url-status=live |archive-url=https://web.archive.org/web/20211112063521/http://scarc.library.oregonstate.edu/coll/pauling/chronology/page10.html |archive-date=November 12, 2021 |access-date=May 18, 2017 |website=] |language=en}}</ref> Oppenheimer even gave Pauling a stunning personal collection of minerals.<ref name="LostAlly">{{Cite web |title=A Lost Ally |url=http://scarc.library.oregonstate.edu/coll/pauling/bond/narrative/page20.html |url-status=live |archive-url=https://web.archive.org/web/20210820230846/http://scarc.library.oregonstate.edu/coll/pauling/bond/narrative/page20.html |archive-date=August 20, 2021 |access-date=May 27, 2015 |website=] |language=en}}</ref> The two men planned to mount a joint attack on the nature of the chemical bond: apparently Oppenheimer would supply the mathematics and Pauling would interpret the results. Their relationship soured when Oppenheimer tried to pursue Pauling's wife, Ava Helen. When Pauling was at work, Oppenheimer came to their home and blurted out an invitation to Ava Helen to join him on a tryst in Mexico. She flatly refused, and reported the incident to Pauling. He immediately cut off his relationship with Oppenheimer.{{r|Nature|p=152}}<ref name="Oppenheimer" /> | |||
Part of Pauling's work on the nature of the chemical bond led to his introduction of the concept of ]. While it is normal to think of the ]s in an ] as being described by ] of types such as ''s,'' ''p,'' etc., it turns out that in describing the bonding in ]s, it is better to construct functions that partake of some of the properties of each. Thus the one 2s and three 2p orbitals in a ] atom can be combined to make four equivalent orbitals (called '''sp<sup>3</sup> hybrid orbitals'''), which would be the appropriate orbitals to describe carbon compounds such as ], or the 2s orbital may be combined with two of the 2p orbitals to make three equivalent orbitals (called '''sp<sup>2</sup> hybrid orbitals'''), with the remaining 2p orbital unhybridized, which would be the appropriate orbitals to describe certain ] carbon compounds such as ]. Other hybridization schemes are also found in other types of molecules. | |||
In the summer of 1930, Pauling made another European trip, during which he learned about gas-phase electron ] from ]. After returning, he built an ] instrument at Caltech with a student of his, ], and used it to study the ] of a large number of chemical substances.<ref name="Hargittai">{{Cite book |last1=Hargittai |first1=István |url={{GBurl|id=KPqac4Y551AC|page=134}} |title=In our own image: personal symmetry in discovery |last2=Hargittai |first2=Magdolna |date=February 29, 2000 |publisher=] |isbn=978-0-306-46091-3 |location=New York City |language=en |lccn=99033173 |ol=9669915M |access-date=May 27, 2015}}</ref> | |||
Another area which he explored was the relationship between ]ing, where ]s are transferred between ]s, and ]ing, where electrons are shared between atoms on an equal basis. Pauling showed that these were merely extremes, between which most actual cases of bonding fall. It was here especially that Pauling's ''elctronegativity'' concept was particularly useful; the electronegativity difference between a pair of atoms will be the surest predictor of the degree of ionicity of the bond. | |||
Pauling introduced the concept of ] in 1932.<ref name="paulingJACS">{{Cite journal |last=Pauling |first=L. |author-mask=4 |date=September 1, 1932 |title=The Nature of the Chemical Bond. IV. The Energy of Single Bonds and the Relative Electronegativity of Atoms |journal=] |volume=54 |issue=9 |pages=3570–3582 |doi=10.1021/ja01348a011 |bibcode=1932JAChS..54.3570P |issn=0002-7863 |lccn=16003159 |oclc=01226990}}</ref> Using the various properties of molecules, such as the energy required to break bonds and the ] ] of molecules, he established a scale and an associated numerical value for most of the elements{{thinsp|—}}the ]{{thinsp|—}}which is useful in predicting the nature of bonds between atoms in molecules.<ref name="Scale2">{{Cite web |date=March 17, 2009 |title=The Pauling Electronegativity Scale: Part 2, Inspired by Biology |url=https://paulingblog.wordpress.com/2009/03/17/the-pauling-electronegativity-scale-part-2-inspired-by-biology/ |url-status=live |archive-url=https://web.archive.org/web/20211117185840/https://paulingblog.wordpress.com/2009/03/17/the-pauling-electronegativity-scale-part-2-inspired-by-biology/ |archive-date=November 17, 2021 |access-date=March 17, 2009 |website=] |language=en}}</ref> | |||
The third of the topics that Pauling attacked under the overall heading of "the nature of the chemical bond" was the accounting of the structure of ], particularly the prototype, ]. The best description of benzene had been made by the ] chemist ]. He had treated it as a rapid interconversion between two structures, each with alternating ] and ]s, but with the double bonds of one structure in the locations where the single bonds were in the other. Pauling showed that a proper description based on ] was an intermediate structure containing some aspects of each. The structure was a superposition of structures rather than a rapid interconversion between them. The name "resonance" was later applied to this phenomenon. In a sense, this phenomenon resembles that of hybridization, described earlier, because it involves combining more than one electronic structure to achieve an intermediate result. | |||
In 1936, Pauling was promoted to chairman of the division of chemistry and chemical engineering at Caltech, and to the position of director of the Gates and Crellin Laboratories of Chemistry. He would hold both positions until 1958.<ref name="OH" /> Pauling also spent a year in 1948 at the ] as George Eastman Visiting Professor and Fellow of Balliol.<ref>{{Cite web |date=August 21, 1994 |title=Obituary: Professor Linus Pauling |url=https://www.independent.co.uk/news/people/obituary-professor-linus-pauling-1377923.html |url-status=live |archive-url=https://web.archive.org/web/20210616040502/https://www.independent.co.uk/news/people/obituary-professor-linus-pauling-1377923.html |archive-date=June 16, 2021 |access-date=January 25, 2018 |website=] |language=en}}</ref> | |||
== Work on biological molecules == | |||
===Nature of the chemical bond=== | |||
In the mid-1930s, Pauling decided to strike out into new areas of interest. Early in his career, he had mentioned a lack of interest in studying molecules of ] importance. But as CalTech was developing a new strength in biology, and Pauling interacted with such great biologists as ], ], ], and ], he started to become interested in studying biological molecules. His first work in this area involved the structure of ]. He was able to demonstrate that the hemoglobin molecule changes structure when it gains or loses an ] atom. As a result of this observation, he decided to make a more thorough study of ] structure in general. He returned to his earlier use of X-ray diffraction analysis. But protein structures were far less amenable to this technique than the ]line ]s of his former work. The best X-ray pictures of proteins in the 1930s had been made by the British ] ], but when Pauling tried, in ], to account for Astbury's observations ], he could not. | |||
] | |||
In the late 1920s, Pauling began publishing papers on the nature of the ]. Between 1937 and 1938, he took a position as George Fischer Baker Non-Resident Lecturer in Chemistry at ]. While at Cornell, he delivered a series of nineteen lectures<ref>{{Cite web |title=Outline of the George Fischer Baker Lectureship, Cornell University |url=http://scarc.library.oregonstate.edu/coll/pauling/bond/notes/1937s.3-outline-01-large.html |url-status=live |archive-url=https://web.archive.org/web/20211112063624/http://scarc.library.oregonstate.edu/coll/pauling/bond/notes/1937s.3-outline-01-large.html |archive-date=November 12, 2021 |access-date=April 13, 2022 |website=] |language=en}}</ref> and completed the bulk of his famous textbook ''The Nature of the Chemical Bond''.<ref name="The George Fischer Baker Lectureship and the Beginnings of the Manuscript">{{Cite web |date=July 30, 2014 |title=The George Fischer Baker Lectureship and the Beginnings of the Manuscript |url=https://paulingblog.wordpress.com/2014/07/30/the-george-fischer-baker-lectureship-and-the-beginnings-of-the-manuscript/ |url-status=live |archive-url=https://web.archive.org/web/20220307085556/https://paulingblog.wordpress.com/2014/07/30/the-george-fischer-baker-lectureship-and-the-beginnings-of-the-manuscript/ |archive-date=March 7, 2022 |access-date=June 3, 2015 |website=The Pauling Blog |publisher=] |language=en}}</ref><ref name="Pauling1960" />{{rp|Preface}} It is based primarily on his work in this area that he received the ] in 1954 "for his research into the nature of the chemical bond and its application to the elucidation of the structure of complex substances".<ref name="Nobel" /> Pauling's book has been considered "chemistry's most influential book of this century and its effective bible".<ref name="Genes2001">{{Cite book |last=Watson |first=James D. |url=https://archive.org/details/passionfordnagen0000wats |title=A passion for DNA: genes, genomes, and society |date=2001 |publisher=] |isbn=978-0-19-860428-0 |edition=2003 |location=] |ol=7401431M |author-link=James Watson |via=]}}</ref> In the 30 years after its first edition was published in 1939, the book was cited more than 16,000 times. Even today, many modern scientific papers and articles in important journals cite this work, more than seventy years after the first publication.<ref name="Google">{{Cite web |title=The nature of the chemical bond (citations and estimated counts) |url=https://scholar.google.com/citations?view_op=view_citation&hl=en&user=b0B12YAAAAAJ&citation_for_view=b0B12YAAAAAJ:j5aT6aphRxQC |access-date=May 27, 2015 |website=Google Scholar}}</ref> | |||
It took eleven years for Pauling to explain the problem: His ] analysis was correct, but Astbury's pictures were taken in such a way that the protein molecules were tilted from their expected positions. Pauling had formulated a model for the structure of hemoglobin in which atoms were arranged in a ] pattern, and applied this idea to proteins in general. This helical arrangement suggested the ] proposed by ] and ] for ] (DNA), and Pauling had come close to this structure himself -- though his proposed structure for DNA was not quite correct, most people conversant with his work believe that if Watson and Crick had not put their model when they did, Pauling would soon have reached the same conclusion. | |||
Part of Pauling's work on the nature of the chemical bond led to his introduction of the concept of ].<ref>{{Cite web |last=Pauling |first=Linus |year=1928 |title=London's paper. General ideas on bonds |url=http://scarc.library.oregonstate.edu/coll/pauling/bond/notes/sci3.001.21.html |access-date=June 2, 2015 |publisher=Oregon State University Libraries Special Collections}}</ref> While it is normal to think of the electrons in an atom as being described by ]s of types such as ''s'' and ''p'', it turns out that in describing the bonding in molecules, it is better to construct functions that partake of some of the properties of each. Thus the one 2s and three 2p orbitals in a carbon atom can be (mathematically) 'mixed' or combined to make four equivalent orbitals (called sp<sup>3</sup> hybrid orbitals), which would be the appropriate orbitals to describe carbon compounds such as ], or the 2s orbital may be combined with two of the 2p orbitals to make three equivalent orbitals (called sp{{sup|2}} hybrid orbitals), with the remaining 2p orbital unhybridized, which would be the appropriate orbitals to describe certain ] carbon compounds such as ].{{r|Pauling1960|pages=111–120}} Other hybridization schemes are also found in other types of molecules. | |||
Pauling also studied ] reactions and showed that ] was caused by a single ] change in the hemoglobin molecule. | |||
Another area which he explored was the relationship between ]ing, where electrons are transferred between atoms, and ]ing, where electrons are shared between atoms on an equal basis. Pauling showed that these were merely extremes, and that for most actual cases of bonding, the ] ] for a polar molecule AB is a ] of wave functions for covalent and ionic molecules.{{r|Pauling1960|page=66}} Here Pauling's '']'' concept is particularly useful; the electronegativity difference between a pair of atoms will be the surest predictor of the degree of ionicity of the bond.<ref>{{Cite web |last=Pauling |first=Linus |date=1930s |title=Notes and Calculations re: Electronegativity and the Electronegativity Scale |url=http://scarc.library.oregonstate.edu/coll/pauling/bond/notes/sci5.001.14.html |access-date=February 29, 2008 |publisher=Oregon State University Libraries Special Collections}}</ref> | |||
The third of the topics that Pauling attacked under the overall heading of "the nature of the chemical bond" was the accounting of the structure of ]s, particularly the prototype, ].<ref>{{Cite web |last=Pauling |first=Linus |date=January 6, 1934 |title=Benzene |url=http://scarc.library.oregonstate.edu/coll/pauling/bond/notes/sci2.004.6.html |access-date=February 29, 2008 |publisher=Oregon State University Libraries Special Collections}}</ref> The best description of benzene had been made by the German chemist ]. He had treated it as a rapid interconversion between two structures, each with alternating single and ]s, but with the double bonds of one structure in the locations where the single bonds were in the other. Pauling showed that a proper description based on quantum mechanics was an intermediate structure which was a blend of each. The structure was a superposition of structures rather than a rapid interconversion between them. The name "]" was later applied to this phenomenon.<ref>{{Cite web |last=Pauling |first=Linus |date=July 29, 1946 |title=Resonance |url=http://scarc.library.oregonstate.edu/coll/pauling/bond/notes/1946a.3.html |access-date=February 29, 2008 |publisher=Oregon State University Libraries Special Collections}}</ref> In a sense, this phenomenon resembles those of hybridization and also polar bonding, both described above, because all three phenomena involve combining more than one electronic structure to achieve an intermediate result.{{citation needed|date=August 2023}} | |||
== Change of direction of his life == | |||
===Ionic crystal structures=== | |||
] produced a profound change in Pauling's life. He had been virtually apolitical to this point, but as a result of his experiences at this juncture Pauling became a peace activist. In 1946 he joined the ], chaired by ], whose mission was to warn the public of the dangers associated with the development of nuclear weapons. His political activism prompted the U.S. State Department to deny him a visa in 1952 when he was invited to speak at a scientific conference in London, but his passport was restored in 1954, shortly before the ceremony in ] where he received his first Nobel Prize. | |||
In 1929, Pauling published ] which help to ] and explain ]s of ]s.<ref>{{Cite journal |last=Pauling, Linus |author-link=Pauling L |year=1929 |title=The principles determining the structure of complex ionic crystals |journal=J. Am. Chem. Soc. |volume=51 |issue=4 |pages=1010–1026 |doi=10.1021/ja01379a006|bibcode=1929JAChS..51.1010P }}</ref><ref name=Pauling1960/> | |||
These rules concern (1) the ratio of cation radius to anion radius, (2) the electrostatic bond strength, (3) the sharing of polyhedron corners, edges and faces, (4) crystals containing different cations, and (5) the rule of parsimony.{{citation needed|date=August 2023}} | |||
===Biological molecules=== | |||
In 1957, Pauling began a petition drive in cooperation with biologist ], who had studied radioactive strontium-90 in the milk teeth of children across North America and concluded that above-ground nuclear testing posed public health risks to the public in the form of radioactive fallout. In 1958, Pauling and his wife presented the United Nations with a petition signed by more than 11,000 scientists calling for an end to nuclear-weapon testing. Public pressure subsequently led to a moratorium on nuclear weapons testing, followed by a partial test-ban treated signed in 1963 by ] and ]. On the day that the treaty went into force, the Nobel Prize Committee awarded Pauling its Peace Prize, describing him as "Linus Carl Pauling, who ever since 1946 has campaigned ceaselessly, not only against nuclear weapons tests, not only against the spread of these armaments, not only against their very use, but against all warfare as a means of solving international conflicts." | |||
] | |||
] | |||
In the mid-1930s, Pauling, strongly influenced by the biologically oriented funding priorities of the Rockefeller Foundation's ], decided to strike out into new areas of interest.<ref name="Kay">{{Cite book |last=Kay |first=Lily E. |url=https://books.google.com/books?id=vEHeNI2a8OEC&pg=PA148 |title=The molecular vision of life: Caltech, the Rockefeller Foundation, and the rise of the new biology |date=1996 |publisher=Oxford University Press |isbn=978-0-19-511143-9 |location=New York |pages=148–151 |access-date=May 27, 2015}}</ref> Although Pauling's early interest had focused almost exclusively on inorganic molecular structures, he had occasionally thought about molecules of biological importance, in part because of Caltech's growing strength in biology. Pauling interacted with such great biologists as ], ], ] and ].<ref name="Califano">{{Cite book |last=Califano |first=Salvatore |url=https://books.google.com/books?id=s-sCt4RT0bMC&pg=PA198 |title=Pathways to modern chemical physics |date=2012 |publisher=Springer |isbn=978-3-642-28179-2 |location=Heidelberg |page=198 |access-date=May 27, 2015}}</ref> His early work in this area included studies of the structure of ] with his student ]. He demonstrated that the hemoglobin molecule changes structure when it gains or loses an ] molecule.<ref name=Califano/> As a result of this observation, he decided to conduct a more thorough study of ] in general. He returned to his earlier use of X-ray diffraction analysis. But protein structures were far less amenable to this technique than the crystalline minerals of his former work. The best X-ray pictures of proteins in the 1930s had been made by the British crystallographer ], but when Pauling tried, in 1937, to account for Astbury's observations quantum mechanically, he could not.<ref name="Livio">{{Cite book |last=Livio |first=Mario |url=https://books.google.com/books?id=0XmmAwAAQBAJ&pg=PA285 |title=Brilliant blunders: from Darwin to Einstein: colossal mistakes by great scientists that changed our understanding of life and the universe |date=2014 |publisher=Simon & Schuster |isbn=978-1-4391-9237-5 |location=}}</ref> | |||
Many of Pauling's critics, including scientists who appreciated the contributions that he had made in chemistry, disagreed with his political positions and saw him as a naïve spokesman for Russian Communism. He was ordered to appear before the Senate Internal Security Subcommittee, which termed him "the number one scientific name in virtually every major activity of the Communist peace offensive in this country." An extraordinary headline in ''Life Magazine'' characterized his 1963 Nobel award as "A Weird Insult from Norway." | |||
It took eleven years for Pauling to explain the problem: his ] analysis was correct, but Astbury's pictures were taken in such a way that the protein molecules were tilted from their expected positions. Pauling had formulated a model for the structure of hemoglobin in which atoms were arranged in a ] pattern, and applied this idea to proteins in general.{{citation needed|date=August 2023}} | |||
Pauling's scientific work in his later years generated controversy and was regarded by many scientists as outright quackery. In ], at the age of 65 when many people go into retirement, he began to champion the ideas of ] ], who proposed that massive doses of ] could prevent colds. Eventually he went beyond this, to the idea that vitamin C could prevent ]. While most scientists do not believe that there is any validity in these claims, a few, convinced that this is one of a number of cases where substances naturally in the body can be used to prevent disease, established a new discipline called ], and on Pauling's retirement in ] he and some of these founded the ], now the ], in ]. However, even the Pauling Institute no longer subscribes to his recommendations for massive vitamin C supplementation. | |||
In 1951, based on the structures of ]s and ]s and the planar nature of the ], Pauling, ] and ] correctly proposed the ] and ] as the primary ]s in protein ].<ref>{{Cite journal |last1=Pauling |first1=L |last2=Corey |first2=RB |year=1951 |title=Configurations of Polypeptide Chains With Favored Orientations Around Single Bonds: Two New Pleated Sheets |journal=Proceedings of the National Academy of Sciences of the United States of America |volume=37 |issue=11 |pages=729–40 |bibcode=1951PNAS...37..729P |doi=10.1073/pnas.37.11.729 |pmc=1063460 |pmid=16578412 |doi-access=free}}</ref><ref name="Goertzel and Goertzel, p. 95-100">Goertzel and Goertzel, p. 95-100.</ref> This work exemplified Pauling's ability to think unconventionally; central to the structure was the unorthodox assumption that one turn of the helix may well contain a non-] number of amino acid residues; for the alpha helix it is 3.7 amino acid residues per turn.{{citation needed|date=August 2023}} | |||
Linus Pauling is one of only two people to have been awarded a ] in more than one field, the other being ]. | |||
Pauling then proposed that ] (DNA) was a ];<ref>{{Cite journal |last1=Pauling |first1=L |last2=Corey |first2=RB |date=February 1953 |title=A Proposed Structure For The Nucleic Acids |journal=Proc Natl Acad Sci U S A |volume=39 |issue=2 |pages=84–97 |bibcode=1953PNAS...39...84P |doi=10.1073/pnas.39.2.84 |pmc=1063734 |pmid=16578429 |doi-access=free}}</ref><ref>{{Cite web |title=Linus Pauling's DNA Model |url=http://www.farooqhussain.org/projects/paulingdnamodel |url-status=dead |archive-url=https://web.archive.org/web/20120204210701/http://www.farooqhussain.org/projects/paulingdnamodel |archive-date=February 4, 2012 |access-date=June 2, 2015}}</ref> his model contained several basic mistakes, including a proposal of neutral phosphate groups, an idea that conflicted with the acidity of DNA. ] had been disappointed that Pauling had won the race to find the alpha ] of proteins. Bragg's team had made a fundamental error in making their models of protein by not recognizing the planar nature of the peptide bond. When it was learned at the ] that Pauling was working on molecular models of the structure of DNA, ] and ] were allowed to make a molecular model of DNA. They later benefited from unpublished data from ] and ] at ] which showed evidence for a helix and planar base stacking along the helix axis. Early in 1953 Watson and Crick proposed a correct structure for the DNA double helix. Pauling later cited several reasons to explain how he had been misled about the structure of DNA, among them misleading density data and the lack of high quality X-ray diffraction photographs. Pauling described this situation as "the biggest disappointment in his life".<ref name="Dye-LATimes">{{Cite web |last=Dye |first=Lee |date=June 2, 1985 |title=The Deeply Personal War of Linus Pauling: Nobel Prize-Winning Chemist Still Battles for His Controversial Vitamin Theory |url=https://www.latimes.com/archives/la-xpm-1985-06-02-vw-15174-story.html |access-date=April 9, 2023 |website=] |language=en-US}}</ref> | |||
During the time Pauling was researching the problem, Rosalind Franklin in England was creating the world's best images. They were key to Watson's and Crick's success. Pauling did not see them before devising his mistaken DNA structure, although his assistant Robert Corey did see at least some of them, while taking Pauling's place at a summer 1952 protein conference in England. Pauling had been prevented from attending because his passport was withheld by the State Department on suspicion that he had Communist sympathies. This led to the legend that Pauling missed the structure of DNA because of the politics of the day (this was at the start of the ] period in the United States). Politics did not play a critical role. Not only did Corey see the images at the time, but Pauling himself regained his passport within a few weeks and toured English laboratories well before writing his DNA paper. He had ample opportunity to visit Franklin's lab and see her work, but chose not to.<ref name="Nature" />{{rp|414–415}} Despite these times, Pauling chose to move on from them and be thankful for the discoveries that he had already found.<ref name="Dye-LATimes"/> | |||
Pauling also studied ] reactions and was among the first to point out that enzymes bring about reactions by stabilizing the ] of the reaction, a view which is central to understanding their mechanism of action.<ref>{{Cite book |last=Metzler |first=David E. |url=https://books.google.com/books?id=X194AYXInC8C&pg=PA330 |title=Biochemistry |date=2003 |publisher=Harcourt, Academic Pr. |isbn=978-0-12-492541-0 |edition=2nd |location=San Diego |ref=Metzler}}</ref> He was also among the first scientists to postulate that the binding of ] to antigens would be due to a complementarity between their structures.<ref name="Lewis">{{Cite book |first1=Julius M. |last1=Cruse |first2=Robert E. |last2=Lewis |url=https://books.google.com/books?id=kNI5Lk2z37sC&pg=PA21 |title=Atlas of immunology |date=2010 |publisher=CRC Press/Taylor & Francis |isbn=978-1-4398-0268-7 |edition=3rd |location=Boca Raton, FL |page=21 |access-date=May 27, 2015}}</ref> Along the same lines, with the physicist turned biologist ], he wrote an early paper arguing that ] was likely to be due to ], rather than similarity, as suggested by a few researchers. This was made clear in the model of the structure of DNA that Watson and Crick discovered.<ref name="Tudge">{{Cite book |last=Tudge |author-link=Colin Tudge |first=Colin |url=https://books.google.com/books?id=Wprqex2OGY4C&pg=PT74 |title=The engineer in the garden: Genes and genetics: from the idea of heredity to the creation of life |date=1995 |publisher=Hill and Wang |isbn=978-0-8090-4259-3 |edition=1st American |location=New York |access-date=May 27, 2015}}</ref> | |||
===Molecular genetics=== | |||
] | |||
In November 1949, Pauling, ], ] and Ibert Wells published "]"<ref name="Itano">{{Cite journal |last1=Pauling |first1=L. |last2=Itano |first2=H. A. |last3=Singer |first3=S. J. |author3-link=Seymour Jonathan Singer |last4=Wells |first4=I. C. |date=November 25, 1949 |title=Sickle Cell Anemia, a Molecular Disease |url=http://scarc.library.oregonstate.edu/coll/pauling/blood/papers/1949p.15.htmlfddsf |journal=Science |volume=110 |issue=2865 |pages=543–548 |bibcode=1949Sci...110..543P |doi=10.1126/science.110.2865.543 |pmid=15395398 |s2cid=31674765 |access-date=June 2, 2015}}</ref> in the journal ''Science''. It was the first proof of a human disease being caused by an abnormal protein, and ] became the first disease understood at the molecular level. (It was not, however, the first demonstration that variant forms of hemoglobin could be distinguished by electrophoresis, which had been shown several years earlier by ] and collaborators).<ref>{{Cite journal |last1=Andersch |first1=MA |last2=Wilson |first2=DA |last3=Menten |first3=ML. |year=1944 |title=Sedimentation constants and electrophoretic mobilities of adult and fetal carbonylhemoglobin |journal=Journal of Biological Chemistry |volume=153 |pages=301–305 |doi=10.1016/S0021-9258(18)51237-0 |doi-access=free}}</ref> Using ], they demonstrated that individuals with ] have a modified form of hemoglobin in their ]s, and that individuals with ] have both the normal and abnormal forms of hemoglobin. This was the first demonstration causally linking an abnormal protein to a disease, and also the first demonstration that ] determines the specific physical properties of proteins, not simply their presence or absence – the dawn of ].<ref name="Strasser">{{Cite journal |last=Strasser |first=Bruno J. |date=August 30, 2002 |title=Linus Pauling's "molecular diseases": Between history and memory |url=http://biologie.unige.ch/assets/brunostrasser/Strasser_AJMG_2002.pdf |archive-url=https://ghostarchive.org/archive/20221009/http://biologie.unige.ch/assets/brunostrasser/Strasser_AJMG_2002.pdf |archive-date=October 9, 2022 |url-status=live |journal=American Journal of Medical Genetics |volume=115 |issue=2 |pages=83–93 |citeseerx=10.1.1.613.5672 |doi=10.1002/ajmg.10542 |pmid=12400054 |access-date=May 27, 2015}}</ref> | |||
His success with sickle cell anemia led Pauling to speculate that a number of other diseases, including mental illnesses such as ], might result from flawed genetics. As chairman of the Division of Chemistry and Chemical Engineering and director of the Gates and Crellin Chemical Laboratories, he encouraged the hiring of researchers with a chemical-biomedical approach to mental illness, a direction not always popular with established ] chemists.<ref name="LATimes1994">{{Cite news |date=August 21, 1994 |title=A Flamboyant Scientist's Legacy : Scholar: Linus C. Pauling's supporters and detractors join in calling the two-time Nobel winner one of the most significant figures of this century |work=Los Angeles Times |url=https://www.latimes.com/archives/la-xpm-1994-08-21-mn-29601-story.html |access-date=June 1, 2015}}</ref>{{rp|2}} | |||
In 1951, Pauling gave a lecture entitled "Molecular Medicine".<ref>{{Cite web |last=Pauling |first=Linus |date=October 1951 |title=Molecular Medicine |url=http://scarc.library.oregonstate.edu/coll/pauling/blood/pictures/1951s.17.html |access-date=August 5, 2007 |publisher=Ava Helen and Linus Pauling Papers}}</ref> In the late 1950s, he studied the role of enzymes in brain function, believing that mental illness may be partly caused by enzyme dysfunction. In the 1960s, as part of his interest in the effects of nuclear weapons, he investigated the role of mutations in evolution, proposing with his student Emile Zuckerkandl, the molecular evolutionary clock, the idea that mutations in proteins and DNA accumulate at a constant rate over time .<ref name="Morgan">{{Cite journal |last=Morgan |first=Gregory J. |date=1998 |title=Emile Zuckerkandl, Linus Pauling, and the molecular evolutionary clock, 1959–1965 |url=https://www.jstor.org/stable/4331476|journal=Journal of the History of Biology |volume=31 |issue=2 |pages=155–78| doi=10.1023/A:1004394418084|jstor=4331476 |pmid=11620303 |s2cid=5660841 |access-date=June 11, 2023}}</ref> | |||
===Structure of the atomic nucleus=== | |||
] | |||
On September 16, 1952, Pauling opened a new research notebook with the words "I have decided to attack the problem of the structure of nuclei." On October 15, 1965, Pauling published his Close-Packed Spheron Model of the atomic nucleus in two well respected journals, ''Science'' and the '']''.<ref name="SpheronPNAS">{{Cite journal |last=Pauling |first=Linus |date=1965 |title=The Close-Packed Spheron Model of atomic nuclei and its relation to the shell model |journal=Proceedings of the National Academy of Sciences of the United States of America |volume=54 |issue=4 |pages=989–994 |bibcode=1965PNAS...54..989P |doi=10.1073/pnas.54.4.989 |pmc=219778 |pmid=16578621 |doi-access=free}}</ref><ref name="SpheronScience">{{Cite journal |last=Pauling |first=L |date=October 15, 1965 |title=The close-packed-spheron theory and nuclear fission |url=http://scarc.library.oregonstate.edu/coll/pauling/rnb/26/26-026.html |journal=Science |volume=150 |issue=3694 |pages=297–305 |bibcode=1965Sci...150..297P |doi=10.1126/science.150.3694.297 |pmid=17742357}}</ref> For nearly three decades, until his death in 1994, Pauling published numerous papers on his spheron cluster model.<ref name=SpheronPNAS/><ref>{{Cite web |last=Pauling |first=Linus |date=July 1966 |title=The close-packed-spheron theory of nuclear structure and the neutron excess for stable nuclei (Dedicated to the seventieth anniversary of Professor Horia Hulubei) |url=http://scarc.library.oregonstate.edu/coll/pauling/rnb/26/26-048.html |access-date=August 5, 2007 |publisher=Revue Roumain de Physique}}</ref><ref>{{Cite journal |last=Pauling |first=Linus |date=December 1967 |title=Magnetic-moment evidence for the polyspheron structure of the lighter atomic nuclei |url=http://scarc.library.oregonstate.edu/coll/pauling/rnb/26/26-068.html |journal=Proceedings of the National Academy of Sciences |volume=58 |issue=6 |pages=2175–2178 |bibcode=1967PNAS...58.2175P |doi=10.1073/pnas.58.6.2175 |pmc=223816 |pmid=16591577 |access-date=August 5, 2007 |doi-access=free}}</ref><ref>{{Cite journal |last=Pauling |first=Linus |date=November 1969 |title=Orbiting clusters in atomic nuclei |url=http://scarc.library.oregonstate.edu/coll/pauling/rnb/26/26-075.html |journal=Proceedings of the National Academy of Sciences of the United States of America |publisher=Proceedings of the National Academy of Sciences |volume=64 |issue=3 |pages=807–9 |bibcode=1969PNAS...64..807P |doi=10.1073/pnas.64.3.807 |pmc=223305 |pmid=16591799 |access-date=August 5, 2007 |doi-access=free}}</ref><ref>{{Cite web |last1=Pauling |first1=Linus |last2=Arthur B. Robinson |year=1975 |title=Rotating clusters in nuclei |url=http://scarc.library.oregonstate.edu/coll/pauling/rnb/26/26-084.html |access-date=August 5, 2007 |publisher=Canadian Journal of Physics}}</ref><ref>{{Cite journal |last=Pauling |first=Linus |date=February 1991 |title=Transition from one revolving cluster to two revolving clusters in the ground-state rotational bands of nuclei in the lanthanon region |url=http://scarc.library.oregonstate.edu/coll/pauling/rnb/26/26-125.html |journal=] |volume=88 |issue=3 |pages=820–823 |bibcode=1991PNAS...88..820P |doi=10.1073/pnas.88.3.820 |pmc=50905 |pmid=11607150 |access-date=August 5, 2007 |doi-access=free}}</ref> | |||
The basic idea behind Pauling's spheron model is that a nucleus can be viewed as a set of "clusters of nucleons". The basic nucleon clusters include the ] , ] , and ] . ] are described as being composed of clusters of ]s, as has often been done for light nuclei.<ref name="Clusters">{{Cite journal |last=Pauling |first=Linus |date=November 15, 1969 |title=Orbiting clusters in atomic nuclei |journal=Proceedings of the National Academy of Sciences |volume=64 |issue=3 |pages=807–809 |bibcode=1969PNAS...64..807P |doi=10.1073/pnas.64.3.807 |pmc=223305 |pmid=16591799 |doi-access=free}}</ref> Pauling attempted to derive the shell structure of nuclei from pure geometrical considerations related to ] rather than starting from an independent particle model as in the usual ]. In an interview given in 1990 Pauling commented on his model:<ref name="AOA">{{Cite web |title=Linus C. Pauling, Ph.D. Biography and Interview |url=https://www.achievement.org/achiever/linus-pauling/#interview/ |website=www.achievement.org |publisher=]}}</ref> | |||
{{blockquote|Now recently, I have been trying to determine detailed structures of atomic nuclei by analyzing the ground state and excited state vibrational bends, as observed experimentally. From reading the physics literature, Physical Review Letters and other journals, I know that many physicists are interested in atomic nuclei, but none of them, so far as I have been able to discover, has been attacking the problem in the same way that I attack it. So I just move along at my own speed, making calculations ...}} | |||
==Activism== | |||
===Wartime work=== | |||
] | |||
Pauling had been practically apolitical until ]. At the beginning of the ], Robert Oppenheimer invited him to be in charge of the Chemistry division of the project. He declined, not wanting to uproot his family.<ref name="Hiroshima">{{Cite web |title=Hiroshima |url=http://scarc.library.oregonstate.edu/coll/pauling/peace/narrative/page4.html |access-date=May 27, 2015 |website=Linus Pauling and the International Peace Movement |publisher=Special Collections & Archives Research Center, Oregon State University}}</ref> | |||
[[File:Beckman Model 735 Dissolved O2 Analyzer 2012 002 3598 jm214p459 crop.tiff|thumb|right| | |||
Beckman Model 735 Dissolved {{O2|nolink=no}} Analyzer, later model based on Pauling's design, 1968]] | |||
] | |||
Pauling did, however, work on research for the military. He was a principal investigator on 14 ].<ref name="Kay2">{{Cite book |last=Kay |first=Lily E. |url=https://books.google.com/books?id=QVtMCAAAQBAJ&pg=PT161 |title=The molecular vision of life : Caltech, the Rockefeller Foundation, and the rise of the new biology |date=1996 |publisher=Oxford University Press |isbn=978-0-19-511143-9 |location=New York |page=179 |access-date=December 27, 2015}}</ref> The ] called a meeting on October 3, 1940, wanting an instrument that could reliably measure oxygen content in a mixture of gases, so that they could measure oxygen conditions in submarines and airplanes. In response Pauling designed the Pauling oxygen meter, which was developed and manufactured by ] After the war, Beckman adapted the oxygen analyzers for use in incubators for premature babies.<ref name="hundred">{{Cite book |last1=Thackray |first1=Arnold |author1-link=Arnold Thackray |title=Arnold O. Beckman : one hundred years of excellence |last2=Minor Myers, Jr. |publisher=Chemical Heritage Foundation |others=foreword by James D. Watson |year=2000 |isbn=978-0-941901-23-9 |location=Philadelphia, Pa. |name-list-style=amp}}</ref>{{rp|180–186}}<ref name="D2OxygenAnalyzer">{{Cite web |title=Beckman D2 Oxygen Analyzer |url=http://www.woodlibrarymuseum.org/museum/item/525/beckman-d2-oxygen-analyzer |access-date=May 28, 2015 |website=Wood Library-Museum of Anesthesiology}}</ref> | |||
In 1942, Pauling successfully submitted a proposal on "The Chemical Treatment of Protein Solutions in the Attempt to Find a Substitute for Human Serum for Transfusions". His project group, which included Joseph B. Koepfli and Dan H. Campbell, developed a possible replacement for ] in ]: ] (Oxypolygelatin).<ref name="Oxypolygelatin">{{Cite web |date=January 27, 2009 |title=Blood and War: The Development of Oxypolygelatin, Part 1 |url=https://paulingblog.wordpress.com/2009/01/27/blood-and-war-the-development-of-oxypolygelatin-part-1/ |access-date=May 28, 2015 |website=The Pauling Blog}}</ref><ref name="Chadarevian">{{Cite book |last=Chadarevian |first=Soraya de |url=https://books.google.com/books?id=A2B4AgAAQBAJ&pg=PA109 |title=Molecularizing biology and medicine new practices and alliances, 1910s–1970s |date=1998 |publisher=Harwood Academic |isbn=978-90-5702-293-7 |location=Amsterdam |page=109 |access-date=May 28, 2015}}</ref> | |||
Other wartime projects with more direct military applications included work on explosives, rocket propellants and the patent for an armor-piercing shell. In October 1948, Pauling, along with ], ], ], and ], was awarded a ] by President ]. The citation credits him for his "imaginative mind", "brilliant success", and "exceptionally meritorious conduct in the performance of outstanding services".<ref name="PMFM">{{Cite web |title=Presidential Medal for Merit |url=http://scarc.library.oregonstate.edu/coll/pauling/awards/1948h.1.html |access-date=May 28, 2015 |website=Linus Pauling Awards Honors and Medals}}</ref><ref name="NLM">{{Cite web |title=The Linus Pauling Papers: Biographical Information |url=https://profiles.nlm.nih.gov/MM/Views/Exhibit/narrative/biographical.html |access-date=February 11, 2008 |publisher=United States National Library of Medicine}}</ref><ref name="Paulus">{{Cite news |last=Paulus |first=John Allen |date=November 5, 1995 |title=Pauling's Prizes |work=] |url=https://query.nytimes.com/gst/fullpage.html?res=9D05E3DE1739F936A35752C1A963958260& |access-date=December 9, 2007}}</ref> In 1949, he served as president of the ].<ref name="ACS1949">{{Cite web |title=ACS President: Linus Pauling (1901–1994) |url=http://www.acs.org/content/acs/en/about/president/acspresidents/linus-pauling.html |access-date=June 1, 2015 |website=ACS Chemistry for Life}}</ref> | |||
===Nuclear activism=== | |||
The aftermath of the ] and his wife Ava's pacifism changed Pauling's life profoundly, and he became a peace activist.{{citation needed|date=August 2023}} | |||
In June 1945, a "May-Johnson Bill" began<ref>{{Citation |title=Part VI: The Manhattan District in Peacetime: The May-Johnson Bill |date=1998 |url=http://www.atomicarchive.com/History/mp/p6s6.shtml |publisher=Atomic Archive |access-date=October 19, 2019}}</ref><ref>{{Citation |title=Atomic Energy Commission |date=November 18, 2016 |url=https://www.atomicheritage.org/history/atomic-energy-commission |publisher=Atomic Heritage Foundation |access-date=October 19, 2019}}</ref><ref>{{Citation |title=Roy Glauber & Priscilla McMillan on Oppenheimer – Atomic Energy Commission |date=June 6, 2013 |url=https://www.manhattanprojectvoices.org/oral-histories/roy-glauber-priscilla-mcmillan-oppenheimer |publisher=Voices of the Manhattan Project |access-date=October 19, 2019}}</ref> that would become the ] (signed August 1, 1946). In November 1945, Pauling spoke to the ] (ICCASP) on ]; shortly after, wife Ava and he accepted membership.<ref name="PaulingICCASP">{{Citation |title=The Independent Citizens Committee of the Arts, Sciences and Professions |date=2009 |url=https://paulingblog.wordpress.com/2010/07/15/the-independent-citizens-committee-for-the-arts-sciences-and-professions/amp/ |publisher=Linus Pauling and the International Peace Movement |access-date=October 19, 2019}}</ref> On January 21, 1946, the group met to discuss ], during which Pauling said, "There is, of course, always a threat to academic freedom – as there is to the other aspects of the freedom and rights of the individual, in the continued attacks which are made on this freedom, these rights, by the selfish, the overly ambitious, the misguided, the unscrupulous, who seek to oppress the great body of mankind in order that they themselves may profit – and we must always be on the alert against this threat, and must fight it with vigor when it becomes dangerous."<ref name=PaulingICCASP/> | |||
In 1946, he joined the ], chaired by ].<ref>{{Cite web |last=Hager |first=Thomas |author-link=Thomas Hager |date=November 29, 2007 |title=Einstein |url=http://scarc.library.oregonstate.edu/coll/pauling/peace/narrative/page9.html |access-date=December 13, 2007 |publisher=Oregon State University Libraries Special Collections}}</ref> Its mission was to warn the public of the dangers associated with the development of nuclear weapons. | |||
], Chief Passport Division, Department of State to Linus Pauling on February 14, 1952]] | |||
His political activism prompted the ] to deny him a passport in 1952, when he was invited to speak at a scientific conference in London.<ref>{{Cite web |title=Linus Pauling |url=http://usstampgallery.com/view.php?id=3228fbec24ea876e8035f61b5fcd643af29a611c |access-date=June 2, 2015 |website=U.S. Stamp Gallery}}</ref><ref>{{Cite web |last=Pauling |first=Linus |date=May 1952 |title=The Department of State and the Structure of Proteins |url=http://scarc.library.oregonstate.edu/coll/pauling/peace/notes/1952a.18.html |access-date=December 13, 2007 |publisher=Oregon State University Libraries Special Collections}}</ref> In a speech before the ] on June 6 of the same year, Senator ] publicly denounced the action of the State Department, and urged the Passport Division to reverse its decision. Pauling and his wife Ava were then issued a "limited passport" to attend the conference.<ref>Robert Paradowski (2011), Oregon State University, Special Collections p.18, , retrieved February 1, 2013</ref><ref> (Okt. 1952) p. 254, Educational Foundation for Nuclear Science, Inc.</ref> His full passport was restored in 1954, shortly before the ceremony in ] where he received his first Nobel Prize.{{citation needed|date=August 2023}} | |||
Joining Einstein, ] and eight other leading scientists and intellectuals, he signed the ] issued July 9, 1955.<ref>{{Cite web |last=Hager |first=Thomas |date=November 29, 2007 |title=Russell/Einstein |author-link=Thomas Hager |url=http://scarc.library.oregonstate.edu/coll/pauling/peace/narrative/page25.html |access-date=December 13, 2007 |publisher=Oregon State University Libraries Special Collections}}</ref> He also supported the ] of July 15, 1955, signed by 52 Nobel Prize laureates.<ref name="Snow">{{Cite book |last=Hermann |first=Armin |title=The new physics: the route into the atomic age: in memory of Albert Einstein, Max von Laue, Otto Hahn, Lise Meitner |date=1979 |publisher=Inter Nationes |location=Bonn-Bad Godesberg |page=130}}</ref> | |||
In May 1957, working with ] professor ], Pauling began to circulate a petition among scientists to stop nuclear testing.<ref name="Tooth">{{Cite web |title=The Baby Tooth Survey |url=https://paulingblog.wordpress.com/tag/committee-for-nuclear-information/ |access-date=June 1, 2011 |website=The Pauling Blog}}</ref> On January 15, 1958, Pauling and his wife presented a petition to United Nations Secretary General ] calling for an end to ]. It was signed by 11,021 scientists representing fifty countries.<ref name="NobelLecture">{{Cite web |title=The Nobel Peace Prize 1962 Linus Pauling: Nobel Lecture |url=https://www.nobelprize.org/nobel_prizes/peace/laureates/1962/pauling-lecture.html |access-date=May 28, 2015 |website=Nobel Prize.org}}</ref><ref name="NobelBlog">{{Cite web |title=Linus Pauling Receives the Nobel Peace Prize |url=https://paulingblog.wordpress.com/tag/united-nations-bomb-test-petition/ |access-date=December 10, 2013 |website=The Pauling Blog}}</ref> | |||
In February 1958, Pauling participated in a publicly televised debate with the atomic physicist ] about the actual probability of fallout causing mutations.<ref name="Moore">{{Cite book |last=Moore |first=Kelly |url=https://books.google.com/books?id=qlBCTlVq_0EC&pg=PA113 |title=Disrupting science : social movements, American scientists, and the politics of the military, 1945–1975 |date=2008 |publisher=Princeton University Press |isbn=978-0-691-11352-4 |location=Princeton |page=113 |access-date=May 28, 2015}}</ref> Later in 1958, Pauling published ''No more war!'', in which he not only called for an end to the testing of nuclear weapons but also an end to war itself. He proposed that a World Peace Research Organization be set up as part of the United Nations to "attack the problem of preserving the peace".<ref name="Nobel" /> | |||
Pauling also supported the work of the St. Louis Citizen's Committee for Nuclear Information (CNI).<ref name=Tooth/> This group, headed by ], Eric Reiss, M. W. Friedlander and John Fowler, organized a longitudinal study to measure radioactive ]-90 in the ] of children across North America. The "]", published by ], demonstrated conclusively in 1961 that above-ground nuclear testing posed significant public health risks in the form of ] spread primarily via milk from cows that had ingested contaminated grass.<ref>{{Cite journal |last=Reiss |first=Louise Zibold |author-link=Louise Reiss |date=November 24, 1961 |title=Strontium-90 Absorption by Deciduous Teeth: Analysis of teeth provides a practicable method of monitoring strontium-90 uptake by human populations |journal=Science |volume=134 |issue=3491 |pages=1669–1673 |doi=10.1126/science.134.3491.1669 |pmid=14491339}}</ref><ref>{{Cite web |last=Hager |first=Thomas |author-link=Thomas Hager |date=November 29, 2007 |title=Strontium-90 |url=http://scarc.library.oregonstate.edu/coll/pauling/peace/narrative/page26.html |access-date=December 13, 2007 |publisher=Oregon State University Libraries Special Collections}}</ref><ref>{{Cite web |last=Hager |first=Thomas |author-link=Thomas Hager |date=November 29, 2007 |title=The Right to Petition |url=http://scarc.library.oregonstate.edu/coll/pauling/peace/narrative/page27.html |access-date=December 13, 2007 |publisher=Oregon State University Libraries Special Collections}}</ref> The Committee for Nuclear Information is frequently credited for its significant contribution to supporting the test ban,<ref name="McCormick">{{Cite book |last=McCormick |first=John |url=https://books.google.com/books?id=xC16yGp9-HUC&pg=PA70 |title=Reclaiming paradise : the global environmental movement |date=1991 |publisher=Indiana University Press |isbn=978-0-253-20660-2 |edition=1st Midland |location=Bloomington |access-date=May 27, 2015}}</ref> as is the ground-breaking research conducted by Reiss and the "Baby Tooth Survey".<ref name="activism">{{Cite book |last1=Allen |first1=Garland E. |author1-link=Garland E. Allen |url=https://books.google.com/books?id=7axYHFEomgMC&pg=PA302 |title=Science, history and social activism : a tribute to Everett Mendelsohn |last2=MacLeod |first2=Roy M. |date=2001 |publisher=Kluwer Academic |isbn=978-1-4020-0495-7 |location=Dordrecht |page=302 |access-date=May 27, 2015}}</ref> | |||
Public pressure and the frightening results of the CNI research led to a moratorium on above-ground nuclear weapons testing, followed by the ], signed in 1963 by ] and ]. On the day that the treaty went into force, October 10, 1963, the Nobel Prize Committee awarded Pauling the ] for 1962. (No prize had previously been awarded for that year.)<ref name="PaloAlto">{{Cite news |date=October 10, 1963 |title=Nobel Peace Prize Awarded to Pauling |work=Palo Alto Times |url=http://scarc.library.oregonstate.edu/coll/pauling/peace/newsclips/1963n.30.html |access-date=May 27, 2015}}</ref> They described him as "Linus Carl Pauling, who ever since 1946 has campaigned ceaselessly, not only against nuclear weapons tests, not only against the spread of these armaments, not only against their very use, but against all warfare as a means of solving international conflicts."<ref>{{Cite web |last=Pauling |first=Linus |date=October 10, 1963 |title=Notes by Linus Pauling. October 10, 1963 |url=http://scarc.library.oregonstate.edu/coll/pauling/peace/notes/rnb23-100.html |access-date=December 13, 2007 |publisher=Oregon State University Libraries Special Collections}}</ref> Pauling himself acknowledged his wife Ava's deep involvement in peace work, and regretted that she was not awarded the Nobel Peace Prize with him.<ref name="LPIBio">{{Cite web |date=May 9, 2014 |title=Linus Pauling Biography |url=http://lpi.oregonstate.edu/linus-pauling-biography |access-date=June 2, 2015 |website=Linus Pauling Institute}}</ref> | |||
===Political criticism=== | |||
]]] | |||
Many of Pauling's critics, including scientists who appreciated the contributions that he had made in chemistry, disagreed with his political positions and saw him as a naïve spokesman for ]. In 1960, he was ordered to appear before the ],<ref name="Senate">{{Cite web |title=issued to Linus Pauling by the Internal Security Subcommittee of the United States Senate. June 20, 1960 |url=http://scarc.library.oregonstate.edu/coll/pauling/peace/papers/bio2.021.3.html |access-date=May 28, 2015 |website=Linus Pauling and the International Peace Movement}}</ref> which termed him "the number one scientific name in virtually every major activity of the Communist peace offensive in this country".<ref name=Humanism/> A headline in '']'' magazine characterized his 1962 Nobel Prize as "A Weird Insult from Norway".<ref name="Kovac">{{Cite journal |last=Kovac |first=Jeffrey |date=1999 |title=A weird insult from Norway: Linus Pauling as public intellectual |journal=Soundings: An Interdisciplinary Journal |volume=82 |issue=1/2 |pages=91–106 |jstor=41178914}}</ref><ref name="Life">{{Cite magazine |date=October 25, 1963 |title=A Weird Insult From Norway |url=https://books.google.com/books?id=UlIEAAAAMBAJ&pg=PA6 |magazine=Life |volume=5 |page=4 |number=17}}</ref> | |||
Pauling was a frequent target of the '']'' magazine. In an article entitled "The Collaborators" in the magazine's July 17, 1962, issue, Pauling was referred to not only as a collaborator, but as a "fellow traveler" of proponents of Soviet-style communism. In 1963, Pauling sued the magazine, its publisher ], and its editor ] for $1 million. He lost both his libel suits and the 1968 appeal (unlike his earlier 1963 libel case against the ]), because in the meantime the landmark case '']'' had established the ] standard for libel lawsuits by public figures, requiring that not only falsehood but deliberate lying should be proved by the plaintiff in such cases.<ref>{{Cite web |date=January 30, 2013 |title=The National Review Lawsuit |url=http://paulingblog.wordpress.com/2013/01/30/the-national-review-lawsuit/ |access-date=December 20, 2013 |publisher=Paulingblog}}</ref><ref>{{Cite web |title=A Tough Conclusion to the National Review Lawsuit |url=http://paulingblog.wordpress.com/tag/william-f-buckley/ |access-date=December 20, 2013 |publisher=Paulingblog}}</ref><ref>{{Cite web |title=Pauling v. Nat'l Review, Inc |url=http://law.justia.com/cases/new-york/court-of-appeals/1968/22-n-y-2d-818-0.html |access-date=December 20, 2013 |website=Justia.com}}</ref><ref>{{Cite news |last=Saxon |first=Wolfgang |date=August 30, 1998 |title=C. Dickerman Williams, 97, Free-Speech Lawyer, Is Dead |work=The New York Times |url=https://www.nytimes.com/1998/08/30/nyregion/c-dickerman-williams-97-free-speech-lawyer-is-dead.html |access-date=December 20, 2013}}</ref> | |||
His peace activism, his frequent travels, and his enthusiastic expansion into chemical-biomedical research all aroused opposition at Caltech. In 1958, the Caltech Board of Trustees demanded that Pauling step down as chairman of the Chemistry and Chemical Engineering Division.<ref name=LATimes1994/>{{rp|2}} Although he had retained tenure as a full professor, Pauling chose to resign from Caltech after he received the Nobel peace prize money. He spent the next three years at the ] (1963–1967).<ref name="Abrams" /> In 1967, he moved to the University of California at San Diego, but remained there only briefly, leaving in 1969 in part because of political tensions with the Reagan-era board of regents.<ref name=LATimes1994/>{{rp|3}} From 1969 to 1974, he accepted a position as professor of chemistry at Stanford University.<ref name="OH" /> | |||
===Vietnam war activism=== | |||
During the 1960s, President Lyndon Johnson's policy of increasing America's involvement in the Vietnam War caused an ] that the Paulings joined with enthusiasm. Pauling denounced the war as unnecessary and unconstitutional. He made speeches, signed protest letters and communicated personally with the North Vietnamese leader, Ho Chi Minh, and gave the lengthy written response to President Johnson. His efforts were ignored by the American government.<ref>{{Cite web |year=2010 |title=Linus Pauling and the International Peace Movement: Vietnam |url=http://scarc.library.oregonstate.edu/coll/pauling/peace/narrative/page49.html |publisher=Oregon State University Libraries}}</ref> | |||
Pauling was awarded the ] by the USSR in 1970.<ref name="Humanism">{{Cite journal |last=Mason |first=Stephen F. |date=1997 |title=The Science and Humanism of Linus Pauling (1901–1994) |url=http://oregonstate.edu/dept/spc/subpages/ahp/overview/entirearticle.htm |url-status=dead |journal=Chemical Society Reviews |volume=26 |pages=29–39 |doi=10.1039/cs9972600029 |archive-url=https://web.archive.org/web/20090515124732/http://oregonstate.edu/dept/spc/subpages/ahp/overview/entirearticle.htm |archive-date=May 15, 2009 |access-date=May 20, 2015}}</ref><ref name="LeninPrize">{{Cite web |date=May 16, 2011 |title=Lenin Peace Prize Recipients |url=http://www.researchhistory.org/2011/05/16/lenin-peace-prize-recipients/ |website=Research History}}</ref> He continued his peace activism in the following years. He and his wife Ava helped to found the ] in 1974.<ref name="HumanistFounders">{{Cite web |title=Founders |url=http://www.intlh.com/index_enu.html |url-status=dead |archive-url=https://web.archive.org/web/20150611040404/http://www.intlh.com/index_enu.html |archive-date=June 11, 2015 |access-date=May 28, 2015 |website=International League of Humanists for peace and tolerance }}</ref> He was president of the scientific advisory board of the ] and also one of the signatories of the ] of 1974/1976.<ref name="Dubrovnik">{{Cite web |title=The Dubrovnik-Philadelphia Statement /1974–1976/ (short version) |url=http://www.intlh.com/statement.html |url-status=dead |archive-url=https://web.archive.org/web/20150924035630/http://www.intlh.com/statement.html |archive-date=September 24, 2015 |access-date=May 28, 2015 |website=International League of Humanists }}</ref> Linus Carl Pauling was an honorary president and member of the International Academy of Science, Munich, until the end of his life.<ref>{{Cite web |title=History |url=http://www.ias-icsd.org/history.html |access-date=March 16, 2015 |website=International Academy of Science, Munich}}</ref> | |||
Pauling was also a supporter of the ].<ref>{{cite book |editor1-last=Johnson |editor1-first=Loch K. |title=Handbook of Intelligence Studies |date=2007 |publisher=Taylor & Francis |page=275}}</ref> | |||
=== Global activism === | |||
He was one of the signatories of the agreement to convene a convention for drafting a ].<ref>{{Cite web |title=Letters from Thane Read asking Helen Keller to sign the World Constitution for world peace. 1961 |url=https://www.afb.org/HelenKellerArchive?a=d&d=A-HK01-07-B149-F04-022.1.8 |access-date=July 1, 2023 |website=Helen Keller Archive |publisher=American Foundation for the Blind}}</ref><ref>{{Cite web |title=Letter from World Constitution Coordinating Committee to Helen, enclosing current materials |url=https://www.afb.org/HelenKellerArchive?a=d&d=A-HK01-07-B154-F05-028.1.6 |access-date=July 3, 2023 |website=Helen Keller Archive |publisher=American Foundation for the Blind}}</ref> As a result, for the first time in human history, a ] convened to draft and adopt a ].<ref>{{Cite web |title=Preparing earth constitution {{!}} Global Strategies & Solutions {{!}} The Encyclopedia of World Problems |url=http://encyclopedia.uia.org/en/strategy/193465 |access-date=July 15, 2023 |website=The Encyclopedia of World Problems {{!}} Union of International Associations (UIA)}}</ref> | |||
===Eugenics=== | |||
Pauling supported a limited form of ] by suggesting that human carriers of defective genes be given a compulsory visible mark – such as a forehead tattoo – to discourage potential mates with the same defect, in order to reduce the number of babies with diseases such as ].<ref>{{Cite web |last=Mendelsohn |first=Everett |author-link=Everett Mendelsohn |date=March–April 2000 |title=The Eugenic Temptation |url=http://harvardmagazine.com/2000/03/the-eugenic-temptation.html |website=Harvard Magazine}}</ref><ref>{{Cite web |last=Special Collections & Archives Research Center, Oregon State University Libraries |date=2015 |title=Eugenics for Alleviating Human Suffering |url=http://scarc.library.oregonstate.edu/coll/pauling/blood/narrative/page35.html |access-date=May 30, 2020 |website=It's in the Blood! A Documentary History of Linus Pauling, Hemoglobin and Sickle Cell Anemia}}</ref> | |||
===Medical research and vitamin C advocacy=== | |||
{{main|Vitamin C megadosage}} | |||
].<ref>{{Cite book |last=Pauling |first=Linus |title=How to Live Longer and Feel Better |publisher=Avon Books |year=1987 |edition=1 |location=New York |ol=18076125M}}</ref>]] | |||
In 1941, at age 40, Pauling was diagnosed with ], a renal disease. Following the recommendations of ], who actively recruited Ava Helen Pauling as "nutritionist, cook, and eventually as deputy 'doctor'", Pauling believed he was able to control the disease with Addis's then-unusual low-protein salt-free diet and vitamin supplements.<ref>{{Cite book |last=Peitzman |first=Steven J. |url=https://books.google.com/books?id=8FUDO5K1pAoC&pg=PA72 |title=Dropsy, dialysis, transplant: a short history of failing kidneys |publisher=Johns Hopkins University Press |year=2007 |isbn=978-0-8018-8734-5 |location=Baltimore |pages=72–8; 190}}</ref> Thus Pauling's initial – and intensely personal – exposure to the idea of treating disease with vitamin supplements was positive.{{citation needed|date=August 2023}} | |||
In 1965, Pauling read ''Niacin Therapy in Psychiatry'' by ] and theorized vitamins might have important biochemical effects unrelated to their prevention of associated deficiency diseases.<ref>{{Cite book |title=Biochemical imbalances in disease a practitioner's handbook |publisher=Singing Dragon |year=2010 |isbn=978-0-85701-028-5 |editor-last=Nicolle |editor-first=Lorraine |location=London |page=27 |editor-last2=Beirne |editor-first2=Ann Woodriff}}</ref> In 1968, Pauling published a brief paper in ] entitled "Orthomolecular psychiatry",<ref>{{Cite journal |last=Pauling |first=Linus |date=April 1968 |title=Orthomolecular psychiatry. Varying the concentrations of substances normally present in the human body may control mental disease |journal=Science |volume=160 |issue=3825 |pages=265–71 |bibcode=1968Sci...160..265P |doi=10.1126/science.160.3825.265 |pmid=5641253 |s2cid=20153555}}</ref> giving a name to the popular but controversial ] movement of the 1970s, and advocating that "orthomolecular therapy, the provision for the individual person of the optimum concentrations of important normal constituents of the brain, may be the preferred treatment for many mentally ill patients." Pauling coined the term "orthomolecular" to refer to the practice of varying the concentration of substances normally present in the body to prevent and treat disease. His ideas formed the basis of ], which is not generally practiced by conventional medical professionals and has been strongly criticized.<ref name="Cassileth">{{Cite book |last=Cassileth |first=Barrie R. |author-link=Barrie R. Cassileth |title=The alternative medicine handbook: the complete reference guide to alternative and complementary therapies |publisher=W.W. Norton |year=1998 |isbn=978-0-393-04566-6 |location=New York |pages=67}}</ref><ref name="bccancer">{{Cite web |date=February 2000 |title=Vitamin Therapy, Megadose / Orthomolecular Therapy |url=http://www.bccancer.bc.ca/PPI/UnconventionalTherapies/VitaminTherapyMegadoseOrthomolecularTherapy.htm |archive-url=https://web.archive.org/web/20070202102734/http://www.bccancer.bc.ca/PPI/UnconventionalTherapies/VitaminTherapyMegadoseOrthomolecularTherapy.htm |archive-date=February 2, 2007 |access-date=August 5, 2007 |publisher=BC Cancer Agency}}</ref> | |||
In 1973, with ] and another colleague, Pauling founded the Institute of Orthomolecular Medicine in Menlo Park, California, which was soon renamed the ] of Science and Medicine. Pauling directed research on vitamin C, but also continued his theoretical work in chemistry and physics until his death. In his last years, he became especially interested in the possible role of vitamin C in preventing ] and published three case reports on the use of ] and vitamin C to relieve ]. During the 1990s, Pauling put forward a comprehensive plan for the treatment of heart disease using lysine and vitamin C. In 1996, a website was created expounding Pauling's treatment which it referred to as Pauling Therapy. Proponents of Pauling Therapy believe that heart disease can be treated and even cured using only lysine and Vitamin C and without drugs or heart operations.<ref>{{Cite web |title=PaulingTherapy.com – Reversing Heart Disease w/o Drugs is Possible |url=http://www.paulingtherapy.com/ |website=www.paulingtherapy.com}}</ref> | |||
Pauling's work on ] in his later years generated much controversy. He was first introduced to the concept of high-dose vitamin C by biochemist ] in 1966. After becoming convinced of its worth, Pauling took 3 grams of vitamin C every day to prevent ].<ref name="frs" /> Excited by his own perceived results, he researched the clinical literature and published '']'' in 1970. He began a long clinical collaboration with the British cancer surgeon ] in 1971 on the use of intravenous and oral vitamin C as cancer therapy for terminal patients.<ref>{{Cite web |last=Cameron |first=Ewan |author-link=Ewan Cameron |title=Cancer Bibliography: Ewan Cameron, M.D. and Vitamin C Therapy |url=http://www.doctoryourself.com/biblio_cameron.html |access-date=August 5, 2007 |publisher=Doctoryourself.com}}</ref> Cameron and Pauling wrote many technical papers and a popular book, ''Cancer and Vitamin C'', that discussed their observations. Pauling made vitamin C popular with the public<ref name="OnThisDay">{{Cite news |last=Severo |first=Richard |date=August 21, 1994 |title=Linus C. Pauling Dies at 93; Chemist and Voice for Peace |work=The New York Times |url=https://www.nytimes.com/learning/general/onthisday/bday/0228.html |access-date=June 1, 2015}}</ref> and eventually published two studies of a group of 100 allegedly ] patients that claimed vitamin C increased survival by as much as four times compared to untreated patients.<ref>{{Cite journal |last1=Cameron |first1=E |author1-link=Ewan Cameron |last2=Pauling |first2=L |date=October 1976 |title=Supplemental ascorbate in the supportive treatment of cancer: Prolongation of survival times in terminal human cancer |journal=Proceedings of the National Academy of Sciences |volume=73 |issue=10 |pages=3685–9 |bibcode=1976PNAS...73.3685C |doi=10.1073/pnas.73.10.3685 |pmc=431183 |pmid=1068480 |doi-access=free}}</ref><ref>{{Cite journal |last1=Cameron |first1=E |author1-link=Ewan Cameron |last2=Pauling |first2=L |date=September 1978 |title=Supplemental ascorbate in the supportive treatment of cancer: Reevaluation of prolongation of survival times in terminal human cancer |journal=Proceedings of the National Academy of Sciences |volume=75 |issue=9 |pages=4538–42 |bibcode=1978PNAS...75.4538C |doi=10.1073/pnas.75.9.4538 |pmc=336151 |pmid=279931 |doi-access=free}}</ref> | |||
A re-evaluation of the claims in 1982 found that the patient groups were not actually comparable, with the vitamin C group being less sick on entry to the study, and judged to be "terminal" much earlier than the comparison group.<ref>{{Cite journal |last=DeWys |first=WD |year=1982 |title=How to evaluate a new treatment for cancer |journal=Your Patient and Cancer |volume=2 |issue=5 |pages=31–36}}</ref> Later clinical trials conducted by the ] led by oncologist ] also concluded that high-dose (10,000 mg) vitamin C was no better than ] at treating cancer and that there was no benefit to high-dose vitamin C.<ref>{{Cite journal |last1=Creagan |first1=ET |last2=Moertel |first2=CG |last3=O'Fallon |first3=JR |date=September 1979 |title=Failure of high-dose vitamin C (ascorbic acid) therapy to benefit patients with advanced cancer. A controlled trial |journal=The New England Journal of Medicine |volume=301 |issue=13 |pages=687–90 |doi=10.1056/NEJM197909273011303 |pmid=384241}}</ref><ref>{{Cite journal |last1=Moertel |first1=CG |last2=Fleming |first2=TR |last3=Creagan |first3=ET |last4=Rubin |first4=J |last5=O'Connell |first5=MJ |last6=Ames |first6=MM |date=January 1985 |title=High-dose vitamin C versus placebo in the treatment of patients with advanced cancer who have had no prior chemotherapy. A randomized double-blind comparison |journal=The New England Journal of Medicine |volume=312 |issue=3 |pages=137–41 |doi=10.1056/NEJM198501173120301 |pmid=3880867}}</ref><ref>{{Cite journal |last=Tschetter |first=L |display-authors=etal |year=1983 |title=A community-based study of vitamin C (ascorbic acid) in patients with advanced cancer |journal=Proceedings of the American Society of Clinical Oncology |volume=2 |page=92}}</ref> The failure of the clinical trials to demonstrate any benefit resulted in the conclusion that vitamin C was not effective in treating cancer; the medical establishment concluded that his claims that vitamin C could prevent colds or treat cancer were ].<ref name="frs" /><ref name="PNASChen2007">{{Cite journal |last1=Chen |first1=Q |last2=Espey |first2=M. G. |last3=Sun |first3=A. Y. |last4=Lee |first4=J.-H. |last5=Krishna |first5=M. C. |last6=Shacter |first6=E. |last7=Choyke |first7=P. L. |last8=Pooput |first8=C. |last9=Kirk |first9=K. L. |last10=Buettner |first10=G. R. |last11=Levine |first11=M. |display-authors=etal |year=2007 |title=Ascorbate in pharmacologic concentrations selectively generates ascorbate radical and hydrogen peroxide in extracellular fluid in vivo |journal=Proceedings of the National Academy of Sciences |volume=104 |issue=21 |pages=8749–54 |bibcode=2007PNAS..104.8749C |doi=10.1073/pnas.0702854104 |pmc=1885574 |pmid=17502596 |doi-access=free}}</ref> Pauling denounced the conclusions of these studies and handling of the final study as "fraud and deliberate misrepresentation",<ref>{{Cite web |last=Goertzel |first=Ted |author-link=Ted Goertzel |year=1996 |title=Analyzing Pauling's Personality: A Three Generational, Three Decade Project |url=http://oregonstate.edu/dept/Special_Collections/subpages/ahp/1995symposium/goertzel.html |url-status=dead |archive-url=https://web.archive.org/web/20071014174038/http://oregonstate.edu/dept/Special_Collections/subpages/ahp/1995symposium/goertzel.html |archive-date=October 14, 2007 |access-date=August 5, 2007 |publisher=Special Collections, Oregon State University Libraries}}</ref><ref name="Golem">{{Cite book |last1=Pinch |first1=Trevor |author1-link=Trevor Pinch |title=Dr. Golem: how to think about medicine |last2=Collins |first2=Harry M. |publisher=] |year=2005 |isbn=978-0-226-11366-1 |location=Chicago |pages=89–111 |chapter=Alternative Medicine: The Cases of Vitamin C and Cancer |chapter-url=http://www.press.uchicago.edu/Misc/Chicago/113663.html}}</ref> and criticized the studies for using oral, rather than ] vitamin C<ref>{{Cite journal |last=Levine |first=M |display-authors=etal |year=2006 |title=Intravenously administered vitamin C as cancer therapy: three cases |journal=] |volume=174 |issue=7 |pages=937–942 |doi=10.1503/cmaj.050346 |pmc=1405876 |pmid=16567755}}</ref> (which was the dosing method used for the first ten days of Pauling's original study<ref name=PNASChen2007/>). Pauling also criticised the Mayo Clinic studies because the controls were taking vitamin C during the trial, and because the duration of the treatment with vitamin C was short; Pauling advocated continued high-dose vitamin C for the rest of the cancer patient's life whereas the Mayo Clinic patients in the second trial were treated with vitamin C for a median of 2.5 months.<ref>{{Cite book |last=Pauling |first=Linus |url=https://archive.org/details/howtolivelongerf00paul/page/173 |title=How to Live Longer and Feel Better |publisher=] |year=1986 |isbn=978-0-7167-1781-2 |location=New York |pages=}}</ref> | |||
Ultimately the negative findings of the Mayo Clinic studies ended general interest in vitamin C as a treatment for cancer.<ref name = Golem/> Despite this, Pauling continued to promote vitamin C for treating cancer and the common cold, working with ] to use vitamin C in the treatment of brain-injured children.<ref name="Pauling1978">{{Cite journal |last=Pauling |first=L |date=November 1978 |title=Orthomolecular enhancement of human development |url=https://profiles.nlm.nih.gov/MM/B/B/K/G/_/mmbbkg.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://profiles.nlm.nih.gov/MM/B/B/K/G/_/mmbbkg.pdf |archive-date=October 9, 2022 |url-status=live |journal=Human Neurological Development |pages=47–51 |editor=Ralph Pelligra}}</ref> He later collaborated with the Canadian physician ] on a micronutrient regime, including high-dose vitamin C, as adjunctive cancer therapy.<ref>{{Cite web |last1=Saul |first1=Andrew W. |last2=Dr. Abram Hoffer |title=Abram Hoffer, M.D., PhD 50 Years of Megavitamin Research, Practice and Publication |url=http://www.doctoryourself.com/biblio_hoffer.html |access-date=August 5, 2007 |publisher=Doctoryourself.com}}</ref> A 2009 review also noted differences between the studies, such as the Mayo Clinic not using intravenous Vitamin C, and suggested further studies into the role of vitamin C when given intravenously.<ref name="Cancerreevaluated">{{Cite journal |last1=Ohno |first1=S |last2=Ohno |first2=Y |last3=Suzuki |first3=N |last4=Soma |first4=G |last5=Inoue |first5=M |year=2009 |title=High-dose vitamin C (ascorbic acid) therapy in the treatment of patients with advanced cancer |journal=Anticancer Research |volume=29 |issue=3 |pages=809–15 |pmid=19414313}}</ref> Results from most clinical trials suggest that modest vitamin C supplementation alone or with other nutrients offers no benefit in the prevention of cancer.<ref name="Oncologist">{{Cite journal |last1=Jacobs |first1=Carmel |last2=Hutton |first2=Brian |last3=Ng |first3=Terry |last4=Shorr |first4=Risa |last5=Clemons |first5=Mark |date=2015 |title=Is There a Role for Oral or Intravenous Ascorbate (Vitamin C) in Treating Patients With Cancer? A Systematic Review |journal=The Oncologist |volume=20 |issue=2 |pages=210–223 |doi=10.1634/theoncologist.2014-0381 |pmc=4319640 |pmid=25601965}}</ref><ref name="NIHFactsheet">{{Cite web |title=Vitamin C Fact Sheet for Health Professionals |url=http://ods.od.nih.gov/factsheets/VitaminC-HealthProfessional/ |access-date=June 2, 2015 |website=National Institutes of Health}}</ref> | |||
== Personal life == | |||
] | |||
Pauling married ] on June 17, 1923. The marriage lasted until her death in 1981. They had four children.<ref name="family">{{Cite web |date=n.d. |title=The Linus Pauling Papers: Biographical Information |url=https://profiles.nlm.nih.gov/ps/retrieve/Narrative/MM/p-nid/53 |access-date=November 10, 2011 |publisher=United States National Library of Medicine}}</ref> Linus Carl Jr. (1925–2023) became a ];<ref>{{cite news|title=Dr. Linus Carl Pauling Jr. Obituary|newspaper=Honolulu Star-Advertiser|date=November 5, 2023|url=https://hawaiiobituaries.com/us/obituaries/hawaiiobituaries/name/linus-pauling-obituary?id=53515681}}</ref> Peter (1931–2003) a ] at ];<ref>{{cite book|chapter=Chapter 17. ''Peter Pauling'' by Matt McConnell|pages=203–240|chapter-url=https://books.google.com/books?id=twuhEAAAQBAJ&pg=PA203 | title=Visions of Linus Pauling | isbn=978-981-12-6077-3 | editor=Petersen, Christoffer Eric | date=11 October 2022 | publisher=World Scientific }}</ref> Edward Crellin (1937–1997) a ];<ref>{{cite web|url=https://www.reed.edu/reed-magazine/in-memoriam/obituaries/november1997/e-crellin-pauling-1959.html |title=Obituary. E. Crellin Pauling '59 |date=November 1997|website=Reed Magazine, Reed College}}</ref> and Linda Helen (born 1932) married noted Caltech geologist and glaciologist ].<ref>{{Cite web |title=Linus Pauling Biography |url=http://lpi.oregonstate.edu/lpbio/lpbio2.html |access-date=November 10, 2011 |publisher=Linus Pauling Institute}}</ref> | |||
Pauling was raised as a member of the ] Church,<ref name="AIPOralHistory">{{Cite web |title=Oral history interview with Linus Carl Pauling, 1964 March 27 |url=http://www.aip.org/history/ohilist/3448.html |access-date=May 27, 2015 |website=American Institute of Physics |archive-date=2014-08-06 |archive-url=https://web.archive.org/web/20140806110327/http://www.aip.org/history/ohilist/3448.html |url-status=dead }}</ref> but later joined the ] Church.<ref name="UUBio">{{Cite web |title=Linus Pauling |url=http://uudb.org/articles/linuspauling.html |access-date=May 27, 2015 |website=Dictionary of Unitarian & Universalist Biography |archive-date=2018-10-16 |archive-url=https://web.archive.org/web/20181016165013/http://uudb.org/articles/linuspauling.html |url-status=dead }}</ref> Two years before his death, in a published dialogue with Buddhist philosopher ], Pauling publicly declared his ].<ref>{{Cite book |last1=Pauling |first1=Linus |url=https://archive.org/details/isbn_9780867202786/page/22 |title=A Lifelong Quest for Peace: A Dialogue |last2=Ikeda |first2=Daisaku |publisher=Jones & Bartlett |year=1992 |isbn=978-0-86720-277-9 |page= |quote=...I am not, however, militant in my atheism. The great English theoretical physicist Paul Dirac is a militant atheist. I suppose he is interested in arguing about the existence of God. I am not. It was once quipped that there is no God and Dirac is his prophet.}}</ref> | |||
On January 30, 1960, Pauling and his wife were using a cabin about {{convert|80|mi|km}} south of ], California, and he decided to go for a walk on a coastal trail. He got lost and tried to climb the rocky cliff, but reached a large overhanging rock about {{convert|300|ft|m|sigfig=1}} above the ocean. He decided it was safest to stay there, and meanwhile he was reported missing. He spent a sleepless night on the cliff before being found after almost 24 hours.<ref>{{Cite web |date=February 1, 1960 |title=Dr. Pauling Rescued, On a Sea Cliff 24 Hrs |url=http://scarc.library.oregonstate.edu/coll/pauling/peace/newsclips/1960n.5.html |access-date=April 22, 2018 |website=scarc.library.oregonstate.edu |publisher=New York Herald Tribune |location=Special Collections & Archives Research Center, Oregon State University Libraries |format=clipping}}</ref> | |||
===Death and legacy=== | |||
Pauling died of ] on August 19, 1994, at 19:20 at home in ], California.<ref name="Offit" /> He was 93 years old.<ref>Goertzel and Goertzel, p. 247.</ref> A grave marker for Pauling was placed in Oswego Pioneer Cemetery in ], Oregon by his sister Pauline, but Pauling's ashes, along with those of his wife, were not buried there until 2005.<ref name="grave">{{Cite web |title=The Centennial: Who's Buried in Linus Pauling's Grave? |url=http://www.ci.oswego.or.us/sites/default/files/fileattachments/publicaffairs/webpage/13678/centennial_july2010.pdf |archive-url=https://ghostarchive.org/archive/20221009/http://www.ci.oswego.or.us/sites/default/files/fileattachments/publicaffairs/webpage/13678/centennial_july2010.pdf |archive-date=October 9, 2022 |url-status=live |access-date=December 26, 2012}}</ref> | |||
Pauling's discoveries led to decisive contributions in a diverse array of areas including around 350 publications in the fields of quantum mechanics, inorganic chemistry, organic chemistry, protein structure, molecular biology, and medicine.<ref name="California">{{Cite web |title=Linus Pauling |url=http://www.californiamuseum.org/inductee/linus-pauling |access-date=June 1, 2015 |website=California Museum|date=February 17, 2012 }}</ref><ref>{{Cite web |title=Linus Pauling – Biographical |url=https://www.nobelprize.org/nobel_prizes/chemistry/laureates/1954/pauling-bio.html |access-date=October 6, 2016 |website=Nobelprize.org |publisher=Nobel Media AB 2014}}</ref> | |||
His work on chemical bonding marks him as one of the founders of modern ].<ref name="natureobit" /> ''The Nature of the Chemical Bond'' was the standard work for many years,<ref name="Hamilton">{{Cite book |last=Hamilton |first=Neil A. |url=https://books.google.com/books?id=tKxOpAh78IsC&pg=PA303 |title=American social leaders and activists |date=2002 |publisher=Facts On File |isbn=978-0-8160-4535-8 |location=New York |access-date=June 1, 2015}}</ref> and concepts like ] and ] remain part of standard chemistry textbooks. While his ] approach fell short of accounting quantitatively for some of the characteristics of molecules, such as the color of ] complexes, and would later be eclipsed by the ] of ], Valence Bond Theory still competes, in its modern form, with Molecular Orbital Theory and ] (DFT) as a way of describing chemical phenomena.<ref>{{Cite journal |last1=Hoffmann |first1=Roald |last2=Shaik |first2=Sason |last3=Hiberty |first3=Philippe C. |year=2003 |title=A Conversation on VB vs MO Theory: A Never-Ending Rivalry? |journal=] |volume=36 |issue=10 |pages=750–6 |doi=10.1021/ar030162a |pmid=14567708}}</ref> Pauling's work on crystal structure contributed significantly to the prediction and elucidation of the structures of complex minerals and compounds.<ref name=Marinacci/>{{rp|80–81}} His discovery of the alpha helix and beta sheet is a fundamental foundation for the study of protein structure.<ref name="Goertzel and Goertzel, p. 95-100" /> | |||
] acknowledged Pauling as the "father of ]".<ref name="natureobit" /><ref>{{Cite news |date=March 1, 1986 |title=Pauling Honored by Scientists at Caltech Event |work=Los Angeles Times |agency=United Press International |url=https://www.latimes.com/archives/la-xpm-1986-03-01-me-13101-story.html |access-date=July 22, 2012}}</ref> His discovery of ] as a "molecular disease" opened the way toward examining genetically acquired mutations at a molecular level.<ref name=Strasser/> | |||
Pauling's 1951 publication with Robert B. Corey and H. R. Branson, "The Structure of Proteins: Two Hydrogen-Bonded Helical Configurations of the Polypeptide Chain," was a key early finding in the then newly emerging field of molecular biology. This publication was honored by a Citation for Chemical Breakthrough Award from the Division of History of Chemistry of the American Chemical Society presented to the department of chemistry, Caltech, in 2017.<ref name="breakthrough">{{Cite web |title=Citations for Chemical Breakthrough Awards 2017 Awardees |url=http://www.scs.illinois.edu/~mainzv/HIST/awards/CCB-2017_Awardees.php |access-date=March 12, 2018 |website=Division of the History of Chemistry}}</ref><ref name="configurations">{{Cite journal |last1=Pauling |first1=L. |last2=Corey |first2=R. B. |last3=Branson |first3=H. R. |author3-link=Herman Branson |year=1951 |title=The structure of proteins: Two hydrogen-bonded helical configurations of the polypeptide chain |journal=Proceedings of the National Academy of Sciences |volume=37 |issue=4 |pages=205–11 |bibcode=1951PNAS...37..205P |doi=10.1073/pnas.37.4.205 |pmc=1063337 |pmid=14816373 |doi-access=free}}</ref> | |||
===Commemorations === | |||
Oregon State University completed construction of the $77 million, {{convert|100,000|sqft|m2|adj=on}} Linus Pauling Science Center in the late 2000s, now housing the bulk of Oregon State's chemistry classrooms, labs, and instruments.<ref>{{Cite web |title=Linus Pauling Science Center {{!}} Department of Chemistry {{!}} Oregon State University |url=http://chemistry.oregonstate.edu/lpsc |access-date=November 10, 2016 |website=chemistry.oregonstate.edu}}</ref> | |||
On March 6, 2008, the ] released a 41 cent stamp honoring Pauling designed by artist ].<ref>{{Cite news |date=March 6, 2008 |title=Four Legends of American Science Now on U.S. Postage Stamps |work=United States Postal Service Postal News, Release No. 08-23 |url=https://about.usps.com/news/national-releases/2008/sr08_023.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://about.usps.com/news/national-releases/2008/sr08_023.pdf |archive-date=October 9, 2022 |url-status=live}}</ref><ref name="stamp">{{Cite web |title=OSU Celebrates Linus Pauling and Release of New U.S. Postal Service Stamp |url=http://oregonstate.edu/events/stamp/ |url-status=dead |archive-url=https://web.archive.org/web/20131102050729/http://oregonstate.edu/events/stamp/ |archive-date=November 2, 2013 |access-date=February 25, 2015 |website=Oregon State University – University Events}}</ref> His description reads: "A remarkably versatile scientist, structural chemist Linus Pauling (1901–1994) won the 1954 Nobel Prize in Chemistry for determining the nature of the chemical bond linking atoms into molecules. His work in establishing the field of molecular biology; his studies of hemoglobin led to the classification of sickle cell anemia as a molecular disease."<ref name=Strasser/> The other scientists on this sheet of stamps included ], biochemist, ], astronomer, and ], physicist.<ref name="stamp" /> | |||
California Governor ] and First Lady ] announced on May 28, 2008, that Pauling would be inducted into the ], located at ]. The induction ceremony took place December 15, 2008. Pauling's son was asked to accept the honor in his place.<ref name="CA.gov">{{Cite web |title=Governor & First Lady Participate in 2008 CA Hall of Fame Induction Ceremony |url=http://gov.ca.gov/news.php?id=11255 |url-status=dead |archive-url=https://web.archive.org/web/20150602035158/http://gov.ca.gov/news.php?id=11255 |archive-date=June 2, 2015 |access-date=June 1, 2015 |website=CA.gov}}</ref> | |||
By proclamation of Gov. ] in the state of Oregon, February 28 has been named "Linus Pauling Day".<ref name=Notebooks/> The Linus Pauling Institute still exists, but moved in 1996 from Palo Alto, California, to Corvallis, Oregon, where it is part of the Linus Pauling Science Center at ].<ref>{{Cite web |title=Linus Pauling Institute |url=http://lpi.oregonstate.edu/ |access-date=June 25, 2013 |publisher=Lpi.oregonstate.edu}}</ref><ref name="CGT2011">{{Cite news |last=Cole |first=Gail |date=October 14, 2011 |title=Linus Pauling Science Center opens at OSU |work=Corvallis Gazette-Times |url=http://www.gazettetimes.com/news/local/linus-pauling-science-center-opens-at-osu/article_4f5a422e-f63a-11e0-af55-001cc4c03286.html |access-date=June 2, 2015}}</ref><ref name="OSUFoundation">{{Cite web |title=Linus Pauling Science Center – A Moment to Celebrate |url=http://osufoundation.org/fundraisingpriorities/facilities/lpsc/landing.htm |access-date=June 2, 2015 |website=Oregon State University Foundation |archive-date=2015-03-29 |archive-url=https://web.archive.org/web/20150329075533/http://osufoundation.org/fundraisingpriorities/facilities/lpsc/landing.htm |url-status=dead }}</ref> ] Special Collections at Oregon State University contain the Ava Helen and Linus Pauling Papers, including digitized versions of Pauling's forty-six research notebooks.<ref name="Notebooks">{{Cite web |title=Linus Pauling Research Notebooks Online |url=http://naturalscience.com/ns/news/news40.html |url-status=dead |archive-url=https://web.archive.org/web/20150905114549/http://naturalscience.com/ns/news/news40.html |archive-date=September 5, 2015 |access-date=June 1, 2015 |website=Natural Science }}</ref> | |||
In 1986, Caltech commemorated Linus Pauling with a symposium and lectureship.<ref name="Zewail">{{Cite book |last=Zewail |first=Ahmed |author-link=Ahmed Zewail |url=https://books.google.com/books?id=Y3Y_4BjUj7gC&pg=PR13 |title=The Chemical Bond Structure and Dynamics |date=1992 |publisher=Elsevier Science |isbn=978-0-08-092669-8 |location=Burlington |access-date=June 1, 2015}}</ref> The Pauling Lecture series at Caltech began in 1989 with a lecture by Pauling himself. The Caltech Chemistry Department renamed room 22 of Gates Hall the Linus Pauling Lecture Hall, since Pauling spent so much time there.<ref name="Baum">{{Cite journal |last=Baum |first=Rudy |date=December 11, 1989 |title=Caltech launches Linus Pauling lecture series |journal=Chemical & Engineering News |volume=67 |issue=50 |pages=18–19 |doi=10.1021/cen-v067n050.p018a}}</ref> | |||
Other places named after Pauling include Pauling Street in Foothill Ranch, California;<ref name="Factory">{{Cite news |last=Johnson |first=Greg |date=March 20, 1996 |title=Pauling Road Address Fits New Vitamin Factory to a 'C' |work=Los Angeles Times |url=https://www.latimes.com/archives/la-xpm-1996-03-20-fi-49317-story.html |access-date=June 2, 2015}}</ref> Linus Pauling Drive in Hercules, California; Linus and Ava Helen Pauling Hall at ] in Aliso Viejo, California;<ref name="Gottlieb">{{Cite news |last=Gottlieb |first=Jeff |date=August 19, 2001 |title=A New-View University |work=Los Angeles Times |url=https://www.latimes.com/archives/la-xpm-2001-aug-19-me-35925-story.html |access-date=June 1, 2015}}</ref> Linus Pauling Middle School in Corvallis, Oregon;<ref name="Woodward">{{Cite news |last=Woodward |first=Raju |date=February 29, 2012 |title=A son's tribute by Linus Pauling Jr. |work=Corvallis Gazette-Times |url=http://www.gazettetimes.com/news/local/a-son-s-tribute-by-linus-pauling-jr/article_9d0f7d7a-627f-11e1-84bb-001871e3ce6c.html |access-date=June 1, 2015}}</ref> and ], a small airfield located in Condon, Oregon, where Pauling spent his youth.<ref name="Airport">{{Cite news |date=October 19, 1988 |title=Scientist cites Condon years as influential |work=Register-Guard, Eugene, Oregon |url=https://news.google.com/newspapers?nid=1310&dat=19881019&id=8_JVAAAAIBAJ&pg=5043,4737376&hl=en |access-date=June 1, 2015}}</ref> There is a psychedelic rock band in Houston, Texas, named ].<ref name="Heberlein">{{Cite book |last=Heberlein |first=L. A. |url=https://books.google.com/books?id=5zV2XWD8q5sC&pg=PA81 |title=The Rough guide to internet radio |date=2002 |publisher=Rough Guides |isbn=978-1-85828-961-8 |location=London |access-date=June 1, 2015}}</ref> | |||
The asteroid ] in the inner asteroid belt, discovered by ], was named after Linus Pauling in 1991, on his 90th birthday.<ref name="Schmadel">{{Cite book |last=Schmadel |first=Lutz D. |author-link=Lutz D. Schmadel |url=https://books.google.com/books?id=aeAg1X7afOoC&pg=PA380 |title=Dictionary of minor planet names |date=2012 |publisher=Springer |isbn=978-3-642-29718-2 |edition=6th |location=Berlin |access-date=June 1, 2015}}</ref> | |||
], developer of the ] kernel, is named after Pauling.<ref name="moody">{{Cite book |last=Moody |first=Glyn |author-link=Glyn Moody |url=https://archive.org/details/rebelcodeinside000mood/page/336 |title=Rebel Code: Linux and the Open Source Revolution |publisher=Perseus Books Group |year=2002 |isbn=978-0-7382-0670-7 |page=}}</ref> | |||
Nobel laureate ] has said that Linus Pauling inspired him.<ref>{{Cite journal |last=Agre |first=Peter |author-link=Peter Agre |date=December 10, 2013 |title=Fifty Years Ago: Linus Pauling and the Belated Nobel Peace Prize |url=https://www.sciencediplomacy.org/sites/default/files/fifty_years_ago-linus_pauling_and_the_belated_nobel_prize_science__diplomacy.pdf |url-status=live |archive-url=https://web.archive.org/web/20140213004929/https://www.sciencediplomacy.org/letter-field/2013/fifty-years-ago-linus-pauling-and-belated-nobel-peace-prize |archive-date=February 13, 2014 |journal=] |volume=2 |issue=4}}{{cbignore}}</ref> | |||
In 2010, ] named its distinguished postdoctoral program in his honor, as the Linus Pauling Distinguished Postdoctoral Fellowship Program.<ref>{{Cite web|url=https://www.pnnl.gov/projects/linus-pauling-distinguished-postdoctoral-fellowship|title=Linus Pauling Distinguished Postdoctoral Fellowship | PNNL|website=www.pnnl.gov}}</ref> | |||
== Honors and awards == | |||
Pauling received numerous awards and honors during his career, including the following:<ref name="summary">{{Cite web |last=Center for Oral History |title=Linus C. Pauling |url=https://oh.sciencehistory.org/oral-histories/pauling-linus-c |website=]}}</ref><ref name="OH" /><ref name="honors">{{Cite web |title=Linus Pauling: Awards, Honors and Medals |url=http://scarc.library.oregonstate.edu/coll/pauling/awards/ |access-date=April 25, 2013 |website=Special Collections |publisher=Oregon State University Libraries}}</ref> | |||
{{div col}} | |||
* 1931 ]<ref>{{Cite web |title=ACS Award in Pure Chemistry |url=http://www.acs.org/content/acs/en/funding-and-awards/awards/national/bytopic/acs-award-in-pure-chemistry.html |access-date=January 18, 2014 |publisher=American Chemical Society}}</ref> | |||
* 1931 ], American Chemical Society.<ref name="OH" /><ref name=honors/> | |||
* 1933 Elected Member of the United States ]<ref>{{cite web|title=Linus Pauling |department=Member Directory |publisher=]|url=https://www.nasonline.org/member-directory/deceased-members/51785.html}}</ref> | |||
* 1936 Elected Member of the United States ]<ref>{{cite web|title=American Philosophical Society Member History |publisher=]|url=https://search.amphilsoc.org/memhist/search?creator=pauling&title=&subject=&subdiv=&mem=&year=&year-max=&dead=&keyword=&smode=advanced}}</ref> | |||
* 1940 ], professional chemistry fraternity.<ref name="Chi1940">{{Cite web |title=Alpha Chi Sigma Fraternity, Certificate of Membership |url=http://scarc.library.oregonstate.edu/coll/pauling/awards/1940h.1.html |access-date=May 27, 2015 |website=Special Collections & Archives Research Center. |publisher=Oregon State University Libraries}}</ref> | |||
* 1941 ], New York Section, American Chemical Society.<ref name="OH" /> | |||
* 1944 Elected Member of the ]<ref>{{cite web|title=Linus Carl Pauling |date=February 9, 2023 |department=Member Directory |publisher=]|url=https://www.amacad.org/person/linus-carl-pauling}}</ref> | |||
* 1946 ], Chicago section of the American Chemical Society.<ref name=honors/> | |||
* 1947 ], ].<ref name="OH" /><ref name=honors/> | |||
* 1947 T. W. Richards Medal, Northeastern Section of the American Chemical Society.<ref name=honors/> | |||
* 1948 ] by President ] of the United States.<ref name="OH" /><ref name=honors/> | |||
* 1948 Elected a Foreign Member of the ] of London (ForMemRS)<ref name="frs" /> | |||
* 1951 ] medal, California section of the American Chemical Society.<ref name=honors/> | |||
* 1952 Pasteur Medal, Biochemical Society of France.<ref name="OH" /><ref>{{Cite web |title=Societe de Chimie Biologique, Louis Pasteur Medal. 1952 – Linus Pauling: Awards, Honors and Medals |url=http://scarc.library.oregonstate.edu/coll/pauling/awards/1952h.3.html |website=scarc.library.oregonstate.edu}}</ref> | |||
* 1954 ].<ref name="OH" /><ref name=honors/> | |||
* 1955 Addis Medal, National Nephrosis Foundation.<ref name="OH" /><ref name=honors/> | |||
* 1955 John Phillips Memorial Award, ].<ref name="OH" /><ref name=honors/> | |||
* 1956 Avogadro Medal, Italian Academy of Science.<ref name="OH" /><ref name=honors/> | |||
* 1957 ] Medal. | |||
* 1957 Pierre Fermat Medal in Mathematics (awarded for only the sixth time in three centuries).<ref name="OH" /><ref name=honors/><ref> (includes image of Fermat medal).</ref> | |||
* 1957 International ] Medal.<ref name="OH" /> | |||
* 1959 ]hip | |||
* 1960 Fellow, ] | |||
* 1961 Humanist of the Year, ]. | |||
* 1961 ] by ].<ref>{{Cite web |title=Gandhi Peace Award |url=http://www.pepeace.org/gandhi-peace-award |access-date=April 26, 2013 |publisher=Promoting Enduring Peace}}</ref> | |||
* 1962 ].<ref name="OH" /><ref name=honors/> | |||
* 1965 Medal, Academy of the Rumanian People's Republic.<ref name="OH" /> | |||
* 1966 ].<ref name="OH" /> | |||
* 1966 Silver Medal, ].<ref name="OH" /> | |||
* 1966 Supreme Peace Sponsor, World Fellowship of Religion.<ref name="OH" /> | |||
* 1967 ] Medal, ].<ref name=honors/> | |||
* 1972 ].<ref name="OH" /> | |||
* 1974 ] by President ] of the United States.<ref name=honors/> | |||
* 1978 ], Presidium of the Academy of the USSR.<ref name="OH" /><ref name=honors/> | |||
* 1979 Gold Medal Honoree, ].<ref>{{Cite web |title=Gold Medal Honorees |url=http://www.socialsciencesinstitute.org/gold-medal-honorees |url-status=dead |archive-url=https://web.archive.org/web/20190702153336/http://www.socialsciencesinstitute.org/gold-medal-honorees |archive-date=July 2, 2019 |access-date=July 2, 2019 |website=]}}</ref> | |||
* 1979 ], ].<ref name="OH" /><ref name="Chemical">{{Cite web |title=NAS Award in Chemical Sciences |url=http://www.nasonline.org/programs/awards/chemical-sciences.html |access-date=June 2, 2015 |publisher=National Academy of Sciences}}</ref> | |||
* 1979 Golden Plate Award, ]<ref>{{Cite web |title=Golden Plate Awardees of the American Academy of Achievement |url=https://www.achievement.org/our-history/golden-plate-awards/#science-exploration |website=www.achievement.org |publisher=]}}</ref> | |||
* 1981 ] Award, ].<ref name=honors/> | |||
* 1984 ], American Chemical Society.<ref name="OH" /><ref name=honors/> | |||
* 1984 Award for Chemistry, ] Foundation.<ref name="OH" /> | |||
* 1986 ] by Fondation de la Maison de la Chimie.<ref name=honors/> | |||
* 1987 Award in Chemical Education, American Chemical Society.<ref name="OH" /> | |||
* 1989 ], ].<ref name="OH" /><ref name=honors/> | |||
* 1990 ] Medal, American Chemical Society Southern California Section.<ref name="OH" /> | |||
* 1992 ] Medal, ]<ref name=honors/> | |||
* 2008 "American Scientists" ] series, $0.41, for his sickle cell disease work.<ref>{{Cite web |title=OSU Celebrates Linus Pauling and Release of New U.S. Postal Service Stamp |url=http://oregonstate.edu/events/stamp/ |url-status=dead |archive-url=https://web.archive.org/web/20131102050729/http://oregonstate.edu/events/stamp/ |archive-date=November 2, 2013 |access-date=April 25, 2013 |website=Events |publisher=Oregon State University}}</ref> | |||
{{div col end}} | |||
== Publications == | |||
===Books=== | |||
{{Library resources box|by=yes|onlinebooksby=yes|viaf= 91892412}} | |||
* {{Cite book |last1=Pauling |first1=Linus |title=Introduction to Quantum Mechanics with Applications to Chemistry |last2=Wilson |first2=E. B. |publisher=Reprinted by ] |year=1985 |isbn=978-0-486-64871-2 |author-mask=2 |orig-year=Originally published in 1935}} | |||
* {{Cite book |last=Pauling |first=Linus |title=The Nature of the Chemical Bond and the Structure of Molecules and Crystals |publisher=] |year=1939 |author-mask=——}} | |||
* {{Cite book |last=Pauling |first=Linus |title=General Chemistry: An Introduction to Descriptive Chemistry and Modern Chemical Theory |publisher=] |year=1947 |author-mask=——}} | |||
** Greatly revised and expanded in 1947, 1953, and 1970. Reprinted by ] in 1988. | |||
* {{Cite journal |last1=Pauling |first1=Linus |title=The Architecture of Molecules |last2=Hayward |first2=Roger |journal=] |publisher=] |year=1964 |isbn=978-0-7167-0158-3 |volume=51 |location=San Francisco |pages=977–84 |doi=10.1073/pnas.51.5.977 |pmc=300194 |pmid=16591181 |author-mask=2 |doi-access=free |issue=5|bibcode=1964PNAS...51..977P }} | |||
** | |||
* {{Cite book |last=Pauling |first=Linus |title=No more war! |publisher=Dodd, Mead & Co |year=1958 |isbn=978-1-124-11966-3 |author-mask=2}} | |||
* {{Cite book |last=Pauling |first=Linus |title=Vitamin C, the Common Cold and the Flu |publisher=] |year=1977 |isbn=978-0-7167-0360-0 |author-mask=2}} | |||
* {{Cite book |last=Pauling |first=Linus |title=How to Live Longer and Feel Better |publisher=Avon |year=1987 |isbn=978-0-380-70289-3 |author-mask=2}} | |||
* {{Cite book |last1=Cameron |first1=E. |author1-link=Ewan Cameron |title=Cancer and Vitamin C: A Discussion of the Nature, Causes, Prevention, and Treatment of Cancer With Special Reference to the Value of Vitamin C |last2=Pauling |first2=Linus |publisher=Camino |year=1993 |isbn=978-0-940159-21-1 |author-mask2=2}} | |||
* {{Cite book |last=Pauling |first=Linus |title=Linus Pauling On Peace: A Scientist Speaks Out on Humanism and World Survival |publisher=Rising Star Press |year=1998 |isbn=978-0-933670-03-7 |author-mask=2}} | |||
* {{Cite book |last1=Hoffer |first1=Abram |title=Healing Cancer: Complementary Vitamin & Drug Treatments |last2=Pauling |first2=Linus |publisher=CCNM Press |year=2004 |isbn=978-1-897025-11-6 |location=Toronto |author-mask2=2}} | |||
* {{Cite book |last1=Ikeda |first1=Daisaku |title=A Lifelong Quest for Peace: A Dialogue |last2=Pauling |first2=Linus |publisher=I. B. Tauris |others=Richard L. Gage (ed., trans.) |year=2008 |isbn=978-1-84511-889-1 |location=London |author-mask2=2}} | |||
===Journal articles=== | |||
* {{Cite journal |last=Pauling |first=L. |author-mask=2 |year=1927 |title=The Theoretical Prediction of the Physical Properties of Many-Electron Atoms and Ions. Mole Refraction, Diamagnetic Susceptibility, and Extension in Space |journal=] |volume=114 |issue=767 |pages=181–211 |bibcode=1927RSPSA.114..181P |doi=10.1098/rspa.1927.0035 |doi-access=free}} | |||
* {{Cite journal |last=Pauling |first=L. |author-mask=2 |year=1929 |title=The Principles Determining the Structure of Complex Ionic Crystals |journal=Journal of the American Chemical Society |volume=51 |issue=4 |pages=1010–1026 |doi=10.1021/ja01379a006|bibcode=1929JAChS..51.1010P }} | |||
* {{Cite journal |last=Pauling |first=L. |author-mask=2 |year=1931 |title=The Nature of the Chemical Bond. I. Application of Results Obtained from the Quantum Mechanics and from a Theory of Paramagnetic Susceptibility to the Structure of Molecules |journal=Journal of the American Chemical Society |volume=53 |issue=4 |pages=1367–1400 |doi=10.1021/ja01355a027|bibcode=1931JAChS..53.1367P }} | |||
* {{Cite journal |last=Pauling |first=L. |author-mask=2 |year=1931 |title=The Nature of the Chemical Bond. II. The One-Electron Bond and the Three-Electron Bond |journal=Journal of the American Chemical Society |volume=53 |issue=9 |pages=3225–3237 |doi=10.1021/ja01360a004|bibcode=1931JAChS..53.3225P }} | |||
* {{Cite journal |last=Pauling |first=L. |author-mask=2 |year=1932 |title=The Nature of the Chemical Bond. III. The Transition from One Extreme Bond Type to Another |journal=Journal of the American Chemical Society |volume=54 |issue=3 |pages=988–1003 |doi=10.1021/ja01342a022|bibcode=1932JAChS..54..988P }} | |||
* {{Cite journal |last=Pauling |first=L. |author-mask=2 |year=1932 |title=The Nature of the Chemical Bond. IV. The Energy of Single Bonds and the Relative Electronegativity of Atoms |journal=Journal of the American Chemical Society |volume=54 |issue=9 |pages=3570–3582 |doi=10.1021/ja01348a011|bibcode=1932JAChS..54.3570P }} | |||
* {{Cite journal |last1=Pauling |first1=L. |last2=Wheland |first2=G. W. |author-mask=2 |year=1933 |title=The Nature of the Chemical Bond. V. The Quantum-Mechanical Calculation of the Resonance Energy of Benzene and Naphthalene and the Hydrocarbon Free Radicals |url=https://authors.library.caltech.edu/11409/1/PAUjcp33c.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://authors.library.caltech.edu/11409/1/PAUjcp33c.pdf |archive-date=October 9, 2022 |url-status=live |journal=The Journal of Chemical Physics |volume=1 |issue=6 |pages=362 |bibcode=1933JChPh...1..362P |doi=10.1063/1.1749304}} | |||
* {{Cite journal |last=Pauling |first=L. |author-mask=2 |year=1935 |title=The Structure and Entropy of Ice and of Other Crystals with Some Randomness of Atomic Arrangement |journal=Journal of the American Chemical Society |volume=57 |issue=12 |pages=2680–2684 |doi=10.1021/ja01315a102|bibcode=1935JAChS..57.2680P }} | |||
* {{Cite journal |last=Pauling |first=L. |author-mask=2 |year=1940 |title=A Theory of the Structure and Process of Formation of Antibodies* |journal=Journal of the American Chemical Society |volume=62 |issue=10 |pages=2643–2657 |doi=10.1021/ja01867a018|bibcode=1940JAChS..62.2643P }} | |||
* {{Cite journal |last=Pauling |first=L. |author-mask=2 |year=1947 |title=Atomic Radii and Interatomic Distances in Metals |journal=Journal of the American Chemical Society |volume=69 |issue=3 |pages=542–553 |doi=10.1021/ja01195a024|bibcode=1947JAChS..69..542P }} | |||
* {{Cite journal |last1=Pauling |first1=L. |last2=Itano |first2=H. A. |last3=Singer |first3=S. J. |author3-link=Seymour Jonathan Singer |last4=Wells |first4=I. C. |author-mask=2 |year=1949 |title=Sickle Cell Anemia, a Molecular Disease |journal=Science |volume=110 |issue=2865 |pages=543–548 |bibcode=1949Sci...110..543P |doi=10.1126/science.110.2865.543 |pmid=15395398|s2cid=31674765 }} | |||
* {{Cite journal |last1=Pauling |first1=L. |last2=Corey |first2=R. B. |last3=Branson |first3=H. R. |author3-link=Herman Branson |author-mask=2 |year=1951 |title=The structure of proteins: Two hydrogen-bonded helical configurations of the polypeptide chain |journal=Proceedings of the National Academy of Sciences |volume=37 |issue=4 |pages=205–11 |bibcode=1951PNAS...37..205P |doi=10.1073/pnas.37.4.205 |pmc=1063337 |pmid=14816373 |doi-access=free}} | |||
==See also== | |||
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==References== | |||
===Citations=== | |||
{{reflist}} | |||
===Bibliography=== | |||
{{Refbegin}} | |||
* {{Cite book |last=Hager |first=Thomas |author-link=Thomas Hager |url=https://archive.org/details/linuspaulingchem00hage |title=Linus Pauling and the Chemistry of Life |publisher=Oxford University Press |year=1998 |isbn=978-0-19-513972-3 |via=]}} | |||
* {{Cite book |last1=Marinacci |first1=Barbara |title=Linus Pauling on Peace |last2=Krishnamurthy |first2=Ramesh |publisher=Rising Star Press |year=1998 |isbn=978-0-933670-03-7}} | |||
* {{Cite book |last=Serafini |first=Anthony |url=https://archive.org/details/linuspaulingmana00sera |title=Linus Pauling: A Man and His Science |date=1989 |publisher=Paragon House |isbn=978-1-55778-440-7 |via=]}} | |||
{{Refend}} | |||
== General and cited references == | |||
{{Refbegin}} | |||
* {{Cite book |last=Hargittai |first=István |title=Candid Science: Conversations with Famous Chemists |publisher=Imperial College Press |year=2000 |isbn=978-1-86094-151-1 |editor-last=Hargittai |editor-first=Magdolna |edition=Reprinted |location=London}} | |||
* {{Cite book |title=Linus Pauling: In His Own Words: Selected Writings, Speeches, and Interviews |publisher=Simon & Schuster |others=Introduction by Linus Pauling |year=1995 |isbn=978-0-684-81387-5 |editor-last=Marinacci |editor-first=Barbara |location=New York}} | |||
* Pauling, Linus. '' Selected Scientific Papers Vol. II'' | |||
* {{Cite book |last=Sturchio |first=Jeffrey L. |url=https://oh.sciencehistory.org/sites/default/files/pauling_l_0067_suppl.pdf |title=Linus C. Pauling, Transcript of an Interview Conducted by Jeffrey L. Sturchio in Denver, Colorado on 6 April 1987 |date=April 6, 1987 |publisher=] |location=Philadelphia, PA}} | |||
{{Refend}} | |||
== Further reading == | |||
{{Refbegin}} | |||
* {{Cite book |last=Coffey |first=Patrick |title=Cathedrals of Science: The Personalities and Rivalries That Made Modern Chemistry |publisher=Oxford University Press |year=2008 |isbn=978-0-19-532134-0}} | |||
* {{Cite journal |last=Davenport |first=Derek A. |year=1996 |title=The Many Lives of Linus Pauling: A Review of Reviews |journal=Journal of Chemical Education |volume=73 |issue=9 |pages=A210 |bibcode=1996JChEd..73A.210D |doi=10.1021/ed073pA210 |doi-access=free}} | |||
* Gormley, Melinda. "The first ‘molecular disease’: a story of Linus Pauling, the intellectual patron." ''Endeavour'' 31.2 (2007): 71–77 {{Webarchive|url=https://web.archive.org/web/20201031085636/http://gerald.monard.free.fr/MC/m2bio/sickle-cell-anemia-1.pdf |date=2020-10-31 }}. | |||
* Mead, Clifford. ''Linus Pauling: Scientist and Peacemaker'' (2008) | |||
* Morgan, G. J. "Emile Zuckerkandl, Linus Pauling, and the molecular evolutionary clock, 1959–1965." ''Journal of the History of Biology'' (1998) 155–178. | |||
* Nakamura, Jeanne, and Mihaly Csikszentmihalyi. "Catalytic creativity: The case of Linus Pauling." ''American Psychologist'' 56.4 (2001): 337+. | |||
* Strasser, Bruno J. "A world in one dimension: Linus Pauling, Francis Crick and the central dogma of molecular biology." ''History and philosophy of the life sciences'' (2006): 491–512 . | |||
* Strasser, Bruno J. "Linus Pauling's “molecular diseases”: Between history and memory." ''American journal of medical genetics'' 115.2 (2002): 83–93 . | |||
* White, Florence Meiman. ''Linus Pauling Scientist and Crusader'' (1980) | |||
* Zannos, Susan. ''Linus Pauling and the chemical bond'' (2004), 48pp , for secondary schools | |||
{{Refend}} | |||
== External links == | |||
{{wikiquote}} | |||
{{Commons|Linus C. Pauling}} | |||
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* a Pauling portal created by Oregon State University Libraries | |||
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* {{Cite web |last=Center for Oral History |title=Linus C. Pauling |url=https://oh.sciencehistory.org/oral-histories/pauling-linus-c |website=]}} | |||
* {{Cite book |last=Sturchio |first=Jeffrey L. |url=https://oh.sciencehistory.org/sites/default/files/pauling_l_0067_suppl.pdf |title=Linus C. Pauling, Transcript of an Interview Conducted by Jeffrey L. Sturchio in Denver, Colorado on 6 April 1987 |date=April 6, 1987 |publisher=] |location=Philadelphia, PA}} | |||
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* {{Webarchive|url=https://web.archive.org/web/20181016165013/http://uudb.org/articles/linuspauling.html |date=2018-10-16 }} | |||
* {{Cite web |title=It's in the Blood! A Documentary History of Linus Pauling, Hemoglobin and Sickle Cell Anemia – Special Collections & Archives Research Center – Oregon State University |url=http://scarc.library.oregonstate.edu/coll/pauling/blood/ |access-date=February 25, 2015 |website=Oregon State University Library}} | |||
* at Oregon State University | |||
* | |||
* – Profiles in Science, National Library of Medicine | |||
* {{Webarchive|url=https://web.archive.org/web/20190719010408/http://www.opb.org/television/programs/oregonexperience/segment/linus-pauling/ |date=July 19, 2019 }} Documentary produced by '']'' | |||
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Latest revision as of 01:52, 11 December 2024
American scientist and activist (1901–1994)
Linus Carl Pauling FRS (/ˈpɔːlɪŋ/ PAW-ling; February 28, 1901 – August 19, 1994) was an American chemist, biochemist, chemical engineer, peace activist, author, and educator. He published more than 1,200 papers and books, of which about 850 dealt with scientific topics. New Scientist called him one of the 20 greatest scientists of all time. For his scientific work, Pauling was awarded the Nobel Prize in Chemistry in 1954. For his peace activism, he was awarded the Nobel Peace Prize in 1962. He is one of five people to have won more than one Nobel Prize (the others being Marie Curie, John Bardeen, Frederick Sanger, and Karl Barry Sharpless). Of these, he is the only person to have been awarded two unshared Nobel Prizes, and one of two people to be awarded Nobel Prizes in different fields, the other being Marie Curie.
Pauling was one of the founders of the fields of quantum chemistry and molecular biology. His contributions to the theory of the chemical bond include the concept of orbital hybridisation and the first accurate scale of electronegativities of the elements. Pauling also worked on the structures of biological molecules, and showed the importance of the alpha helix and beta sheet in protein secondary structure. Pauling's approach combined methods and results from X-ray crystallography, molecular model building, and quantum chemistry. His discoveries inspired the work of Rosalind Franklin, James Watson, Francis Crick, and Maurice Wilkins on the structure of DNA, which in turn made it possible for geneticists to crack the DNA code of all organisms.
In his later years, he promoted nuclear disarmament, as well as orthomolecular medicine, megavitamin therapy, and dietary supplements, especially ascorbic acid (commonly known as Vitamin C). None of his ideas concerning the medical usefulness of large doses of vitamins have gained much acceptance in the mainstream scientific community. He was married to the American human rights activist Ava Helen Pauling.
Early life and education
Linus Carl Pauling was born on February 28, 1901, in Portland, Oregon, the firstborn child of Herman Henry William Pauling (1876–1910) and Lucy Isabelle "Belle" Darling (1881–1926). He was named "Linus Carl", in honor of Lucy's father, Linus, and Herman's father, Carl. His ancestry included German and English.
In 1902, after his sister Pauline was born, Pauling's parents decided to move out of Portland to find more affordable and spacious living quarters than their one-room apartment. Lucy stayed with her husband's parents in Oswego until Herman brought the family to Salem, where he worked briefly as a traveling salesman for the Skidmore Drug Company. Within a year of Lucile's birth in 1904, Herman Pauling moved his family to Oswego, Oregon where he opened his own drugstore. He moved his family to Condon, Oregon, in 1905. By 1906, Herman Pauling was suffering from recurrent abdominal pain. He died of a perforated ulcer on June 11, 1910, leaving Lucy to care for Linus, Lucile and Pauline.
Pauling attributes his interest in becoming a chemist to being amazed by experiments conducted by a friend, Lloyd A. Jeffress, who had a small chemistry lab kit. He later wrote: "I was simply entranced by chemical phenomena, by the reactions in which substances, often with strikingly different properties, appear; and I hoped to learn more and more about this aspect of the world."
In high school, Pauling conducted chemistry experiments by scavenging equipment and material from an abandoned steel plant. With an older friend, Lloyd Simon, Pauling set up Palmon Laboratories in Simon's basement. They approached local dairies offering to perform butterfat samplings at cheap prices but dairymen were wary of trusting two boys with the task, and the business ended in failure.
At age 15, the high school senior had enough credits to enter Oregon State University (OSU), known then as Oregon Agricultural College. Lacking two American history courses required for his high school diploma, Pauling asked the school principal if he could take the courses concurrently during the spring semester. Denied, he left Washington High School in June without a diploma. The school awarded him an honorary diploma 45 years later, after he was awarded two Nobel Prizes.
Pauling held a number of jobs to earn money for his future college expenses, including working part-time at a grocery store for US$8 per week (equivalent to US$220 in 2023). His mother arranged an interview with the owner of a number of manufacturing plants in Portland, Mr. Schwietzerhoff, who hired him as an apprentice machinist at a salary of US$40 per month (equivalent to US$1,120 in 2023). This was soon raised to US$50 per month. Pauling also set up a photography laboratory with two friends. In September 1917, Pauling was finally admitted by Oregon State University. He immediately resigned from the machinist's job and informed his mother, who saw no point in a university education, of his plans.
Higher education
In his first semester, Pauling registered for two courses in chemistry, two in mathematics, mechanical drawing, introduction to mining and use of explosives, modern English prose, gymnastics and military drill. His roommate was childhood pal and lifelong best friend Lloyd Jeffress. He was active in campus life and founded the school's chapter of the Delta Upsilon fraternity. After his second year, he planned to take a job in Portland to help support his mother. The college offered him a position teaching quantitative analysis, a course he had just finished taking himself. He worked forty hours a week in the laboratory and classroom and earned US$100 a month (equivalent to US$1,500 in 2023), enabling him to continue his studies.
In his last two years at school, Pauling became aware of the work of Gilbert N. Lewis and Irving Langmuir on the electronic structure of atoms and their bonding to form molecules. He decided to focus his research on how the physical and chemical properties of substances are related to the structure of the atoms of which they are composed, becoming one of the founders of the new science of quantum chemistry.
Engineering professor Samuel Graf (1887–1966) selected Pauling to be his teaching assistant in a mechanics and materials course. During the winter of his senior year, Pauling taught a chemistry course for home economics majors. It was in one of these classes that Pauling met his future wife, Ava Helen Miller.
In 1922, Pauling graduated with a degree in chemical engineering. He went on to graduate school at the California Institute of Technology (Caltech) in Pasadena, California, under the guidance of Roscoe Dickinson and Richard Tolman. His graduate research involved the use of X-ray diffraction to determine the structure of crystals. He published seven papers on the crystal structure of minerals while he was at Caltech. He received his PhD in physical chemistry and mathematical physics, summa cum laude, in 1925.
Career
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Linus Pauling, Oregon Experience, Oregon Historical Society |
In 1926, Pauling was awarded a Guggenheim Fellowship to travel to Europe, to study under German physicist Arnold Sommerfeld in Munich, Danish physicist Niels Bohr in Copenhagen and Austrian physicist Erwin Schrödinger in Zürich. All three were experts in the new field of quantum mechanics and other branches of physics. Pauling became interested in how quantum mechanics might be applied in his chosen field of interest, the electronic structure of atoms and molecules. In Zürich, Pauling was also exposed to one of the first quantum mechanical analyses of bonding in the hydrogen molecule, done by Walter Heitler and Fritz London. Pauling devoted the two years of his European trip to this work and decided to make it the focus of his future research. He became one of the first scientists in the field of quantum chemistry and a pioneer in the application of quantum theory to the structure of molecules.
In 1927, Pauling took a new position as an assistant professor at Caltech in theoretical chemistry. He launched his faculty career with a very productive five years, continuing with his X-ray crystal studies and also performing quantum mechanical calculations on atoms and molecules. He published approximately fifty papers in those five years, and created the five rules now known as Pauling's rules. By 1929, he was promoted to associate professor, and by 1930, to full professor. In 1931, the American Chemical Society awarded Pauling the Langmuir Prize for the most significant work in pure science by a person 30 years of age or younger. The following year, Pauling published what he regarded as his most important paper, in which he first laid out the concept of hybridization of atomic orbitals and analyzed the tetravalency of the carbon atom.
At Caltech, Pauling struck up a close friendship with theoretical physicist Robert Oppenheimer at the University of California, Berkeley, who spent part of his research and teaching schedule as a visitor at Caltech each year. Pauling was also affiliated with Berkeley, serving as a visiting lecturer in physics and chemistry from 1929 to 1934. Oppenheimer even gave Pauling a stunning personal collection of minerals. The two men planned to mount a joint attack on the nature of the chemical bond: apparently Oppenheimer would supply the mathematics and Pauling would interpret the results. Their relationship soured when Oppenheimer tried to pursue Pauling's wife, Ava Helen. When Pauling was at work, Oppenheimer came to their home and blurted out an invitation to Ava Helen to join him on a tryst in Mexico. She flatly refused, and reported the incident to Pauling. He immediately cut off his relationship with Oppenheimer.
In the summer of 1930, Pauling made another European trip, during which he learned about gas-phase electron diffraction from Herman Francis Mark. After returning, he built an electron diffraction instrument at Caltech with a student of his, Lawrence Olin Brockway, and used it to study the molecular structure of a large number of chemical substances.
Pauling introduced the concept of electronegativity in 1932. Using the various properties of molecules, such as the energy required to break bonds and the dipole moments of molecules, he established a scale and an associated numerical value for most of the elements — the Pauling Electronegativity Scale — which is useful in predicting the nature of bonds between atoms in molecules.
In 1936, Pauling was promoted to chairman of the division of chemistry and chemical engineering at Caltech, and to the position of director of the Gates and Crellin Laboratories of Chemistry. He would hold both positions until 1958. Pauling also spent a year in 1948 at the University of Oxford as George Eastman Visiting Professor and Fellow of Balliol.
Nature of the chemical bond
In the late 1920s, Pauling began publishing papers on the nature of the chemical bond. Between 1937 and 1938, he took a position as George Fischer Baker Non-Resident Lecturer in Chemistry at Cornell University. While at Cornell, he delivered a series of nineteen lectures and completed the bulk of his famous textbook The Nature of the Chemical Bond. It is based primarily on his work in this area that he received the Nobel Prize in Chemistry in 1954 "for his research into the nature of the chemical bond and its application to the elucidation of the structure of complex substances". Pauling's book has been considered "chemistry's most influential book of this century and its effective bible". In the 30 years after its first edition was published in 1939, the book was cited more than 16,000 times. Even today, many modern scientific papers and articles in important journals cite this work, more than seventy years after the first publication.
Part of Pauling's work on the nature of the chemical bond led to his introduction of the concept of orbital hybridization. While it is normal to think of the electrons in an atom as being described by orbitals of types such as s and p, it turns out that in describing the bonding in molecules, it is better to construct functions that partake of some of the properties of each. Thus the one 2s and three 2p orbitals in a carbon atom can be (mathematically) 'mixed' or combined to make four equivalent orbitals (called sp hybrid orbitals), which would be the appropriate orbitals to describe carbon compounds such as methane, or the 2s orbital may be combined with two of the 2p orbitals to make three equivalent orbitals (called sp hybrid orbitals), with the remaining 2p orbital unhybridized, which would be the appropriate orbitals to describe certain unsaturated carbon compounds such as ethylene. Other hybridization schemes are also found in other types of molecules. Another area which he explored was the relationship between ionic bonding, where electrons are transferred between atoms, and covalent bonding, where electrons are shared between atoms on an equal basis. Pauling showed that these were merely extremes, and that for most actual cases of bonding, the quantum-mechanical wave function for a polar molecule AB is a combination of wave functions for covalent and ionic molecules. Here Pauling's electronegativity concept is particularly useful; the electronegativity difference between a pair of atoms will be the surest predictor of the degree of ionicity of the bond.
The third of the topics that Pauling attacked under the overall heading of "the nature of the chemical bond" was the accounting of the structure of aromatic hydrocarbons, particularly the prototype, benzene. The best description of benzene had been made by the German chemist Friedrich Kekulé. He had treated it as a rapid interconversion between two structures, each with alternating single and double bonds, but with the double bonds of one structure in the locations where the single bonds were in the other. Pauling showed that a proper description based on quantum mechanics was an intermediate structure which was a blend of each. The structure was a superposition of structures rather than a rapid interconversion between them. The name "resonance" was later applied to this phenomenon. In a sense, this phenomenon resembles those of hybridization and also polar bonding, both described above, because all three phenomena involve combining more than one electronic structure to achieve an intermediate result.
Ionic crystal structures
In 1929, Pauling published five rules which help to predict and explain crystal structures of ionic compounds. These rules concern (1) the ratio of cation radius to anion radius, (2) the electrostatic bond strength, (3) the sharing of polyhedron corners, edges and faces, (4) crystals containing different cations, and (5) the rule of parsimony.
Biological molecules
In the mid-1930s, Pauling, strongly influenced by the biologically oriented funding priorities of the Rockefeller Foundation's Warren Weaver, decided to strike out into new areas of interest. Although Pauling's early interest had focused almost exclusively on inorganic molecular structures, he had occasionally thought about molecules of biological importance, in part because of Caltech's growing strength in biology. Pauling interacted with such great biologists as Thomas Hunt Morgan, Theodosius Dobzhanski, Calvin Bridges and Alfred Sturtevant. His early work in this area included studies of the structure of hemoglobin with his student Charles D. Coryell. He demonstrated that the hemoglobin molecule changes structure when it gains or loses an oxygen molecule. As a result of this observation, he decided to conduct a more thorough study of protein structure in general. He returned to his earlier use of X-ray diffraction analysis. But protein structures were far less amenable to this technique than the crystalline minerals of his former work. The best X-ray pictures of proteins in the 1930s had been made by the British crystallographer William Astbury, but when Pauling tried, in 1937, to account for Astbury's observations quantum mechanically, he could not.
It took eleven years for Pauling to explain the problem: his mathematical analysis was correct, but Astbury's pictures were taken in such a way that the protein molecules were tilted from their expected positions. Pauling had formulated a model for the structure of hemoglobin in which atoms were arranged in a helical pattern, and applied this idea to proteins in general.
In 1951, based on the structures of amino acids and peptides and the planar nature of the peptide bond, Pauling, Robert Corey and Herman Branson correctly proposed the alpha helix and beta sheet as the primary structural motifs in protein secondary structure. This work exemplified Pauling's ability to think unconventionally; central to the structure was the unorthodox assumption that one turn of the helix may well contain a non-integer number of amino acid residues; for the alpha helix it is 3.7 amino acid residues per turn.
Pauling then proposed that deoxyribonucleic acid (DNA) was a triple helix; his model contained several basic mistakes, including a proposal of neutral phosphate groups, an idea that conflicted with the acidity of DNA. Sir Lawrence Bragg had been disappointed that Pauling had won the race to find the alpha helix structure of proteins. Bragg's team had made a fundamental error in making their models of protein by not recognizing the planar nature of the peptide bond. When it was learned at the Cavendish Laboratory that Pauling was working on molecular models of the structure of DNA, James Watson and Francis Crick were allowed to make a molecular model of DNA. They later benefited from unpublished data from Maurice Wilkins and Rosalind Franklin at King's College which showed evidence for a helix and planar base stacking along the helix axis. Early in 1953 Watson and Crick proposed a correct structure for the DNA double helix. Pauling later cited several reasons to explain how he had been misled about the structure of DNA, among them misleading density data and the lack of high quality X-ray diffraction photographs. Pauling described this situation as "the biggest disappointment in his life".
During the time Pauling was researching the problem, Rosalind Franklin in England was creating the world's best images. They were key to Watson's and Crick's success. Pauling did not see them before devising his mistaken DNA structure, although his assistant Robert Corey did see at least some of them, while taking Pauling's place at a summer 1952 protein conference in England. Pauling had been prevented from attending because his passport was withheld by the State Department on suspicion that he had Communist sympathies. This led to the legend that Pauling missed the structure of DNA because of the politics of the day (this was at the start of the McCarthy period in the United States). Politics did not play a critical role. Not only did Corey see the images at the time, but Pauling himself regained his passport within a few weeks and toured English laboratories well before writing his DNA paper. He had ample opportunity to visit Franklin's lab and see her work, but chose not to. Despite these times, Pauling chose to move on from them and be thankful for the discoveries that he had already found.
Pauling also studied enzyme reactions and was among the first to point out that enzymes bring about reactions by stabilizing the transition state of the reaction, a view which is central to understanding their mechanism of action. He was also among the first scientists to postulate that the binding of antibodies to antigens would be due to a complementarity between their structures. Along the same lines, with the physicist turned biologist Max Delbrück, he wrote an early paper arguing that DNA replication was likely to be due to complementarity, rather than similarity, as suggested by a few researchers. This was made clear in the model of the structure of DNA that Watson and Crick discovered.
Molecular genetics
In November 1949, Pauling, Harvey Itano, S. J. Singer and Ibert Wells published "Sickle Cell Anemia, a Molecular Disease" in the journal Science. It was the first proof of a human disease being caused by an abnormal protein, and sickle cell anemia became the first disease understood at the molecular level. (It was not, however, the first demonstration that variant forms of hemoglobin could be distinguished by electrophoresis, which had been shown several years earlier by Maud Menten and collaborators). Using electrophoresis, they demonstrated that individuals with sickle cell disease have a modified form of hemoglobin in their red blood cells, and that individuals with sickle cell trait have both the normal and abnormal forms of hemoglobin. This was the first demonstration causally linking an abnormal protein to a disease, and also the first demonstration that Mendelian inheritance determines the specific physical properties of proteins, not simply their presence or absence – the dawn of molecular genetics.
His success with sickle cell anemia led Pauling to speculate that a number of other diseases, including mental illnesses such as schizophrenia, might result from flawed genetics. As chairman of the Division of Chemistry and Chemical Engineering and director of the Gates and Crellin Chemical Laboratories, he encouraged the hiring of researchers with a chemical-biomedical approach to mental illness, a direction not always popular with established Caltech chemists.
In 1951, Pauling gave a lecture entitled "Molecular Medicine". In the late 1950s, he studied the role of enzymes in brain function, believing that mental illness may be partly caused by enzyme dysfunction. In the 1960s, as part of his interest in the effects of nuclear weapons, he investigated the role of mutations in evolution, proposing with his student Emile Zuckerkandl, the molecular evolutionary clock, the idea that mutations in proteins and DNA accumulate at a constant rate over time .
Structure of the atomic nucleus
On September 16, 1952, Pauling opened a new research notebook with the words "I have decided to attack the problem of the structure of nuclei." On October 15, 1965, Pauling published his Close-Packed Spheron Model of the atomic nucleus in two well respected journals, Science and the Proceedings of the National Academy of Sciences. For nearly three decades, until his death in 1994, Pauling published numerous papers on his spheron cluster model.
The basic idea behind Pauling's spheron model is that a nucleus can be viewed as a set of "clusters of nucleons". The basic nucleon clusters include the deuteron , helion , and triton . Even–even nuclei are described as being composed of clusters of alpha particles, as has often been done for light nuclei. Pauling attempted to derive the shell structure of nuclei from pure geometrical considerations related to Platonic solids rather than starting from an independent particle model as in the usual shell model. In an interview given in 1990 Pauling commented on his model:
Now recently, I have been trying to determine detailed structures of atomic nuclei by analyzing the ground state and excited state vibrational bends, as observed experimentally. From reading the physics literature, Physical Review Letters and other journals, I know that many physicists are interested in atomic nuclei, but none of them, so far as I have been able to discover, has been attacking the problem in the same way that I attack it. So I just move along at my own speed, making calculations ...
Activism
Wartime work
Pauling had been practically apolitical until World War II. At the beginning of the Manhattan Project, Robert Oppenheimer invited him to be in charge of the Chemistry division of the project. He declined, not wanting to uproot his family.
Pauling did, however, work on research for the military. He was a principal investigator on 14 OSRD contracts. The National Defense Research Committee called a meeting on October 3, 1940, wanting an instrument that could reliably measure oxygen content in a mixture of gases, so that they could measure oxygen conditions in submarines and airplanes. In response Pauling designed the Pauling oxygen meter, which was developed and manufactured by Arnold O. Beckman, Inc. After the war, Beckman adapted the oxygen analyzers for use in incubators for premature babies.
In 1942, Pauling successfully submitted a proposal on "The Chemical Treatment of Protein Solutions in the Attempt to Find a Substitute for Human Serum for Transfusions". His project group, which included Joseph B. Koepfli and Dan H. Campbell, developed a possible replacement for human blood plasma in transfusions: polyoxy gelatin (Oxypolygelatin).
Other wartime projects with more direct military applications included work on explosives, rocket propellants and the patent for an armor-piercing shell. In October 1948, Pauling, along with Lee A. DuBridge, William A. Fowler, Max Mason, and Bruce H. Sage, was awarded a Presidential Medal for Merit by President Harry S. Truman. The citation credits him for his "imaginative mind", "brilliant success", and "exceptionally meritorious conduct in the performance of outstanding services". In 1949, he served as president of the American Chemical Society.
Nuclear activism
The aftermath of the Manhattan Project and his wife Ava's pacifism changed Pauling's life profoundly, and he became a peace activist.
In June 1945, a "May-Johnson Bill" began that would become the Atomic Energy Act of 1946 (signed August 1, 1946). In November 1945, Pauling spoke to the Independent Citizens Committee of the Arts, Sciences and Professions (ICCASP) on atomic weapons; shortly after, wife Ava and he accepted membership. On January 21, 1946, the group met to discuss academic freedom, during which Pauling said, "There is, of course, always a threat to academic freedom – as there is to the other aspects of the freedom and rights of the individual, in the continued attacks which are made on this freedom, these rights, by the selfish, the overly ambitious, the misguided, the unscrupulous, who seek to oppress the great body of mankind in order that they themselves may profit – and we must always be on the alert against this threat, and must fight it with vigor when it becomes dangerous."
In 1946, he joined the Emergency Committee of Atomic Scientists, chaired by Albert Einstein. Its mission was to warn the public of the dangers associated with the development of nuclear weapons.
His political activism prompted the US State Department to deny him a passport in 1952, when he was invited to speak at a scientific conference in London. In a speech before the US Senate on June 6 of the same year, Senator Wayne Morse publicly denounced the action of the State Department, and urged the Passport Division to reverse its decision. Pauling and his wife Ava were then issued a "limited passport" to attend the conference. His full passport was restored in 1954, shortly before the ceremony in Stockholm where he received his first Nobel Prize.
Joining Einstein, Bertrand Russell and eight other leading scientists and intellectuals, he signed the Russell-Einstein Manifesto issued July 9, 1955. He also supported the Mainau Declaration of July 15, 1955, signed by 52 Nobel Prize laureates.
In May 1957, working with Washington University in St. Louis professor Barry Commoner, Pauling began to circulate a petition among scientists to stop nuclear testing. On January 15, 1958, Pauling and his wife presented a petition to United Nations Secretary General Dag Hammarskjöld calling for an end to the testing of nuclear weapons. It was signed by 11,021 scientists representing fifty countries.
In February 1958, Pauling participated in a publicly televised debate with the atomic physicist Edward Teller about the actual probability of fallout causing mutations. Later in 1958, Pauling published No more war!, in which he not only called for an end to the testing of nuclear weapons but also an end to war itself. He proposed that a World Peace Research Organization be set up as part of the United Nations to "attack the problem of preserving the peace".
Pauling also supported the work of the St. Louis Citizen's Committee for Nuclear Information (CNI). This group, headed by Barry Commoner, Eric Reiss, M. W. Friedlander and John Fowler, organized a longitudinal study to measure radioactive strontium-90 in the baby teeth of children across North America. The "Baby Tooth Survey", published by Louise Reiss, demonstrated conclusively in 1961 that above-ground nuclear testing posed significant public health risks in the form of radioactive fallout spread primarily via milk from cows that had ingested contaminated grass. The Committee for Nuclear Information is frequently credited for its significant contribution to supporting the test ban, as is the ground-breaking research conducted by Reiss and the "Baby Tooth Survey".
Public pressure and the frightening results of the CNI research led to a moratorium on above-ground nuclear weapons testing, followed by the Partial Test Ban Treaty, signed in 1963 by John F. Kennedy and Nikita Khrushchev. On the day that the treaty went into force, October 10, 1963, the Nobel Prize Committee awarded Pauling the Nobel Peace Prize for 1962. (No prize had previously been awarded for that year.) They described him as "Linus Carl Pauling, who ever since 1946 has campaigned ceaselessly, not only against nuclear weapons tests, not only against the spread of these armaments, not only against their very use, but against all warfare as a means of solving international conflicts." Pauling himself acknowledged his wife Ava's deep involvement in peace work, and regretted that she was not awarded the Nobel Peace Prize with him.
Political criticism
Many of Pauling's critics, including scientists who appreciated the contributions that he had made in chemistry, disagreed with his political positions and saw him as a naïve spokesman for Soviet communism. In 1960, he was ordered to appear before the Senate Internal Security Subcommittee, which termed him "the number one scientific name in virtually every major activity of the Communist peace offensive in this country". A headline in Life magazine characterized his 1962 Nobel Prize as "A Weird Insult from Norway".
Pauling was a frequent target of the National Review magazine. In an article entitled "The Collaborators" in the magazine's July 17, 1962, issue, Pauling was referred to not only as a collaborator, but as a "fellow traveler" of proponents of Soviet-style communism. In 1963, Pauling sued the magazine, its publisher William Rusher, and its editor William F. Buckley, Jr for $1 million. He lost both his libel suits and the 1968 appeal (unlike his earlier 1963 libel case against the Hearst Corporation), because in the meantime the landmark case New York Times Co. v. Sullivan had established the actual malice standard for libel lawsuits by public figures, requiring that not only falsehood but deliberate lying should be proved by the plaintiff in such cases.
His peace activism, his frequent travels, and his enthusiastic expansion into chemical-biomedical research all aroused opposition at Caltech. In 1958, the Caltech Board of Trustees demanded that Pauling step down as chairman of the Chemistry and Chemical Engineering Division. Although he had retained tenure as a full professor, Pauling chose to resign from Caltech after he received the Nobel peace prize money. He spent the next three years at the Center for the Study of Democratic Institutions (1963–1967). In 1967, he moved to the University of California at San Diego, but remained there only briefly, leaving in 1969 in part because of political tensions with the Reagan-era board of regents. From 1969 to 1974, he accepted a position as professor of chemistry at Stanford University.
Vietnam war activism
During the 1960s, President Lyndon Johnson's policy of increasing America's involvement in the Vietnam War caused an anti-war movement that the Paulings joined with enthusiasm. Pauling denounced the war as unnecessary and unconstitutional. He made speeches, signed protest letters and communicated personally with the North Vietnamese leader, Ho Chi Minh, and gave the lengthy written response to President Johnson. His efforts were ignored by the American government.
Pauling was awarded the International Lenin Peace Prize by the USSR in 1970. He continued his peace activism in the following years. He and his wife Ava helped to found the International League of Humanists in 1974. He was president of the scientific advisory board of the World Union for Protection of Life and also one of the signatories of the Dubrovnik–Philadelphia statement of 1974/1976. Linus Carl Pauling was an honorary president and member of the International Academy of Science, Munich, until the end of his life.
Pauling was also a supporter of the Fair Play for Cuba Committee.
Global activism
He was one of the signatories of the agreement to convene a convention for drafting a world constitution. As a result, for the first time in human history, a World Constituent Assembly convened to draft and adopt a Constitution for the Federation of Earth.
Eugenics
Pauling supported a limited form of eugenics by suggesting that human carriers of defective genes be given a compulsory visible mark – such as a forehead tattoo – to discourage potential mates with the same defect, in order to reduce the number of babies with diseases such as sickle cell anemia.
Medical research and vitamin C advocacy
Main article: Vitamin C megadosageIn 1941, at age 40, Pauling was diagnosed with Bright's disease, a renal disease. Following the recommendations of Thomas Addis, who actively recruited Ava Helen Pauling as "nutritionist, cook, and eventually as deputy 'doctor'", Pauling believed he was able to control the disease with Addis's then-unusual low-protein salt-free diet and vitamin supplements. Thus Pauling's initial – and intensely personal – exposure to the idea of treating disease with vitamin supplements was positive.
In 1965, Pauling read Niacin Therapy in Psychiatry by Abram Hoffer and theorized vitamins might have important biochemical effects unrelated to their prevention of associated deficiency diseases. In 1968, Pauling published a brief paper in Science entitled "Orthomolecular psychiatry", giving a name to the popular but controversial megavitamin therapy movement of the 1970s, and advocating that "orthomolecular therapy, the provision for the individual person of the optimum concentrations of important normal constituents of the brain, may be the preferred treatment for many mentally ill patients." Pauling coined the term "orthomolecular" to refer to the practice of varying the concentration of substances normally present in the body to prevent and treat disease. His ideas formed the basis of orthomolecular medicine, which is not generally practiced by conventional medical professionals and has been strongly criticized.
In 1973, with Arthur B. Robinson and another colleague, Pauling founded the Institute of Orthomolecular Medicine in Menlo Park, California, which was soon renamed the Linus Pauling Institute of Science and Medicine. Pauling directed research on vitamin C, but also continued his theoretical work in chemistry and physics until his death. In his last years, he became especially interested in the possible role of vitamin C in preventing atherosclerosis and published three case reports on the use of lysine and vitamin C to relieve angina pectoris. During the 1990s, Pauling put forward a comprehensive plan for the treatment of heart disease using lysine and vitamin C. In 1996, a website was created expounding Pauling's treatment which it referred to as Pauling Therapy. Proponents of Pauling Therapy believe that heart disease can be treated and even cured using only lysine and Vitamin C and without drugs or heart operations.
Pauling's work on vitamin C in his later years generated much controversy. He was first introduced to the concept of high-dose vitamin C by biochemist Irwin Stone in 1966. After becoming convinced of its worth, Pauling took 3 grams of vitamin C every day to prevent colds. Excited by his own perceived results, he researched the clinical literature and published Vitamin C and the Common Cold in 1970. He began a long clinical collaboration with the British cancer surgeon Ewan Cameron in 1971 on the use of intravenous and oral vitamin C as cancer therapy for terminal patients. Cameron and Pauling wrote many technical papers and a popular book, Cancer and Vitamin C, that discussed their observations. Pauling made vitamin C popular with the public and eventually published two studies of a group of 100 allegedly terminal patients that claimed vitamin C increased survival by as much as four times compared to untreated patients.
A re-evaluation of the claims in 1982 found that the patient groups were not actually comparable, with the vitamin C group being less sick on entry to the study, and judged to be "terminal" much earlier than the comparison group. Later clinical trials conducted by the Mayo Clinic led by oncologist Dr. Edward T. Creagan also concluded that high-dose (10,000 mg) vitamin C was no better than placebo at treating cancer and that there was no benefit to high-dose vitamin C. The failure of the clinical trials to demonstrate any benefit resulted in the conclusion that vitamin C was not effective in treating cancer; the medical establishment concluded that his claims that vitamin C could prevent colds or treat cancer were quackery. Pauling denounced the conclusions of these studies and handling of the final study as "fraud and deliberate misrepresentation", and criticized the studies for using oral, rather than intravenous vitamin C (which was the dosing method used for the first ten days of Pauling's original study). Pauling also criticised the Mayo Clinic studies because the controls were taking vitamin C during the trial, and because the duration of the treatment with vitamin C was short; Pauling advocated continued high-dose vitamin C for the rest of the cancer patient's life whereas the Mayo Clinic patients in the second trial were treated with vitamin C for a median of 2.5 months.
Ultimately the negative findings of the Mayo Clinic studies ended general interest in vitamin C as a treatment for cancer. Despite this, Pauling continued to promote vitamin C for treating cancer and the common cold, working with The Institutes for the Achievement of Human Potential to use vitamin C in the treatment of brain-injured children. He later collaborated with the Canadian physician Abram Hoffer on a micronutrient regime, including high-dose vitamin C, as adjunctive cancer therapy. A 2009 review also noted differences between the studies, such as the Mayo Clinic not using intravenous Vitamin C, and suggested further studies into the role of vitamin C when given intravenously. Results from most clinical trials suggest that modest vitamin C supplementation alone or with other nutrients offers no benefit in the prevention of cancer.
Personal life
Pauling married Ava Helen Miller on June 17, 1923. The marriage lasted until her death in 1981. They had four children. Linus Carl Jr. (1925–2023) became a psychiatrist; Peter (1931–2003) a crystallographer at University College London; Edward Crellin (1937–1997) a biologist; and Linda Helen (born 1932) married noted Caltech geologist and glaciologist Barclay Kamb.
Pauling was raised as a member of the Lutheran Church, but later joined the Unitarian Universalist Church. Two years before his death, in a published dialogue with Buddhist philosopher Daisaku Ikeda, Pauling publicly declared his atheism.
On January 30, 1960, Pauling and his wife were using a cabin about 80 miles (130 km) south of Monterey, California, and he decided to go for a walk on a coastal trail. He got lost and tried to climb the rocky cliff, but reached a large overhanging rock about 300 feet (90 m) above the ocean. He decided it was safest to stay there, and meanwhile he was reported missing. He spent a sleepless night on the cliff before being found after almost 24 hours.
Death and legacy
Pauling died of prostate cancer on August 19, 1994, at 19:20 at home in Big Sur, California. He was 93 years old. A grave marker for Pauling was placed in Oswego Pioneer Cemetery in Lake Oswego, Oregon by his sister Pauline, but Pauling's ashes, along with those of his wife, were not buried there until 2005.
Pauling's discoveries led to decisive contributions in a diverse array of areas including around 350 publications in the fields of quantum mechanics, inorganic chemistry, organic chemistry, protein structure, molecular biology, and medicine.
His work on chemical bonding marks him as one of the founders of modern quantum chemistry. The Nature of the Chemical Bond was the standard work for many years, and concepts like hybridization and electronegativity remain part of standard chemistry textbooks. While his Valence bond approach fell short of accounting quantitatively for some of the characteristics of molecules, such as the color of organometallic complexes, and would later be eclipsed by the molecular orbital theory of Robert Mulliken, Valence Bond Theory still competes, in its modern form, with Molecular Orbital Theory and density functional theory (DFT) as a way of describing chemical phenomena. Pauling's work on crystal structure contributed significantly to the prediction and elucidation of the structures of complex minerals and compounds. His discovery of the alpha helix and beta sheet is a fundamental foundation for the study of protein structure.
Francis Crick acknowledged Pauling as the "father of molecular biology". His discovery of sickle cell anemia as a "molecular disease" opened the way toward examining genetically acquired mutations at a molecular level.
Pauling's 1951 publication with Robert B. Corey and H. R. Branson, "The Structure of Proteins: Two Hydrogen-Bonded Helical Configurations of the Polypeptide Chain," was a key early finding in the then newly emerging field of molecular biology. This publication was honored by a Citation for Chemical Breakthrough Award from the Division of History of Chemistry of the American Chemical Society presented to the department of chemistry, Caltech, in 2017.
Commemorations
Oregon State University completed construction of the $77 million, 100,000-square-foot (9,300 m) Linus Pauling Science Center in the late 2000s, now housing the bulk of Oregon State's chemistry classrooms, labs, and instruments.
On March 6, 2008, the United States Postal Service released a 41 cent stamp honoring Pauling designed by artist Victor Stabin. His description reads: "A remarkably versatile scientist, structural chemist Linus Pauling (1901–1994) won the 1954 Nobel Prize in Chemistry for determining the nature of the chemical bond linking atoms into molecules. His work in establishing the field of molecular biology; his studies of hemoglobin led to the classification of sickle cell anemia as a molecular disease." The other scientists on this sheet of stamps included Gerty Cori, biochemist, Edwin Hubble, astronomer, and John Bardeen, physicist.
California Governor Arnold Schwarzenegger and First Lady Maria Shriver announced on May 28, 2008, that Pauling would be inducted into the California Hall of Fame, located at The California Museum for History, Women and the Arts. The induction ceremony took place December 15, 2008. Pauling's son was asked to accept the honor in his place.
By proclamation of Gov. John Kitzhaber in the state of Oregon, February 28 has been named "Linus Pauling Day". The Linus Pauling Institute still exists, but moved in 1996 from Palo Alto, California, to Corvallis, Oregon, where it is part of the Linus Pauling Science Center at Oregon State University. The Valley Library Special Collections at Oregon State University contain the Ava Helen and Linus Pauling Papers, including digitized versions of Pauling's forty-six research notebooks.
In 1986, Caltech commemorated Linus Pauling with a symposium and lectureship. The Pauling Lecture series at Caltech began in 1989 with a lecture by Pauling himself. The Caltech Chemistry Department renamed room 22 of Gates Hall the Linus Pauling Lecture Hall, since Pauling spent so much time there.
Other places named after Pauling include Pauling Street in Foothill Ranch, California; Linus Pauling Drive in Hercules, California; Linus and Ava Helen Pauling Hall at Soka University of America in Aliso Viejo, California; Linus Pauling Middle School in Corvallis, Oregon; and Pauling Field, a small airfield located in Condon, Oregon, where Pauling spent his youth. There is a psychedelic rock band in Houston, Texas, named The Linus Pauling Quartet.
The asteroid 4674 Pauling in the inner asteroid belt, discovered by Eleanor F. Helin, was named after Linus Pauling in 1991, on his 90th birthday.
Linus Torvalds, developer of the Linux kernel, is named after Pauling.
Nobel laureate Peter Agre has said that Linus Pauling inspired him.
In 2010, Pacific Northwest National Laboratory named its distinguished postdoctoral program in his honor, as the Linus Pauling Distinguished Postdoctoral Fellowship Program.
Honors and awards
Pauling received numerous awards and honors during his career, including the following:
- 1931 ACS Award in Pure Chemistry
- 1931 Irving Langmuir Award, American Chemical Society.
- 1933 Elected Member of the United States National Academy of Sciences
- 1936 Elected Member of the United States American Philosophical Society
- 1940 Alpha Chi Sigma, professional chemistry fraternity.
- 1941 Nichols Medal, New York Section, American Chemical Society.
- 1944 Elected Member of the American Academy of Arts and Sciences
- 1946 Willard Gibbs Award, Chicago section of the American Chemical Society.
- 1947 Davy Medal, Royal Society.
- 1947 T. W. Richards Medal, Northeastern Section of the American Chemical Society.
- 1948 Presidential Medal for Merit by President Harry S. Truman of the United States.
- 1948 Elected a Foreign Member of the Royal Society of London (ForMemRS)
- 1951 Gilbert N. Lewis medal, California section of the American Chemical Society.
- 1952 Pasteur Medal, Biochemical Society of France.
- 1954 Nobel Prize in Chemistry.
- 1955 Addis Medal, National Nephrosis Foundation.
- 1955 John Phillips Memorial Award, American College of Physicians.
- 1956 Avogadro Medal, Italian Academy of Science.
- 1957 Paul Sabatier Medal.
- 1957 Pierre Fermat Medal in Mathematics (awarded for only the sixth time in three centuries).
- 1957 International Grotius Medal.
- 1959 Messenger Lectureship
- 1960 Fellow, Royal Society of Arts
- 1961 Humanist of the Year, American Humanist Association.
- 1961 Gandhi Peace Award by Promoting Enduring Peace.
- 1962 Nobel Peace Prize.
- 1965 Medal, Academy of the Rumanian People's Republic.
- 1966 Linus Pauling Award.
- 1966 Silver Medal, Institute of France.
- 1966 Supreme Peace Sponsor, World Fellowship of Religion.
- 1967 Washington A. Roebling Medal, Mineralogical Society of America.
- 1972 Lenin Peace Prize.
- 1974 National Medal of Science by President Gerald R. Ford of the United States.
- 1978 Lomonosov Gold Medal, Presidium of the Academy of the USSR.
- 1979 Gold Medal Honoree, National Institute of Social Sciences.
- 1979 NAS Award in Chemical Sciences, National Academy of Sciences.
- 1979 Golden Plate Award, American Academy of Achievement
- 1981 John K. Lattimer Award, American Urological Association.
- 1984 Priestley Medal, American Chemical Society.
- 1984 Award for Chemistry, Arthur M. Sackler Foundation.
- 1986 Lavoisier Medal by Fondation de la Maison de la Chimie.
- 1987 Award in Chemical Education, American Chemical Society.
- 1989 Vannevar Bush Award, National Science Board.
- 1990 Richard C. Tolman Medal, American Chemical Society Southern California Section.
- 1992 Daisaku Ikeda Medal, Soka Gakkai International
- 2008 "American Scientists" U.S. postage stamp series, $0.41, for his sickle cell disease work.
Publications
Books
Library resources aboutLinus Pauling
By Linus Pauling
- ——; Wilson, E. B. (1985) . Introduction to Quantum Mechanics with Applications to Chemistry. Reprinted by Dover Publications. ISBN 978-0-486-64871-2.
- —— (1939). The Nature of the Chemical Bond and the Structure of Molecules and Crystals. Cornell University Press.
- —— (1947). General Chemistry: An Introduction to Descriptive Chemistry and Modern Chemical Theory. Freeman.
- Greatly revised and expanded in 1947, 1953, and 1970. Reprinted by Dover Publications in 1988.
- ——; Hayward, Roger (1964). "The Architecture of Molecules". Proceedings of the National Academy of Sciences. 51 (5). San Francisco: Freeman: 977–84. Bibcode:1964PNAS...51..977P. doi:10.1073/pnas.51.5.977. ISBN 978-0-7167-0158-3. PMC 300194. PMID 16591181.
- —— (1958). No more war!. Dodd, Mead & Co. ISBN 978-1-124-11966-3.
- —— (1977). Vitamin C, the Common Cold and the Flu. Freeman. ISBN 978-0-7167-0360-0.
- —— (1987). How to Live Longer and Feel Better. Avon. ISBN 978-0-380-70289-3.
- Cameron, E.; —— (1993). Cancer and Vitamin C: A Discussion of the Nature, Causes, Prevention, and Treatment of Cancer With Special Reference to the Value of Vitamin C. Camino. ISBN 978-0-940159-21-1.
- —— (1998). Linus Pauling On Peace: A Scientist Speaks Out on Humanism and World Survival. Rising Star Press. ISBN 978-0-933670-03-7.
- Hoffer, Abram; —— (2004). Healing Cancer: Complementary Vitamin & Drug Treatments. Toronto: CCNM Press. ISBN 978-1-897025-11-6.
- Ikeda, Daisaku; —— (2008). A Lifelong Quest for Peace: A Dialogue. Richard L. Gage (ed., trans.). London: I. B. Tauris. ISBN 978-1-84511-889-1.
Journal articles
- —— (1927). "The Theoretical Prediction of the Physical Properties of Many-Electron Atoms and Ions. Mole Refraction, Diamagnetic Susceptibility, and Extension in Space". Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. 114 (767): 181–211. Bibcode:1927RSPSA.114..181P. doi:10.1098/rspa.1927.0035.
- —— (1929). "The Principles Determining the Structure of Complex Ionic Crystals". Journal of the American Chemical Society. 51 (4): 1010–1026. Bibcode:1929JAChS..51.1010P. doi:10.1021/ja01379a006.
- —— (1931). "The Nature of the Chemical Bond. I. Application of Results Obtained from the Quantum Mechanics and from a Theory of Paramagnetic Susceptibility to the Structure of Molecules". Journal of the American Chemical Society. 53 (4): 1367–1400. Bibcode:1931JAChS..53.1367P. doi:10.1021/ja01355a027.
- —— (1931). "The Nature of the Chemical Bond. II. The One-Electron Bond and the Three-Electron Bond". Journal of the American Chemical Society. 53 (9): 3225–3237. Bibcode:1931JAChS..53.3225P. doi:10.1021/ja01360a004.
- —— (1932). "The Nature of the Chemical Bond. III. The Transition from One Extreme Bond Type to Another". Journal of the American Chemical Society. 54 (3): 988–1003. Bibcode:1932JAChS..54..988P. doi:10.1021/ja01342a022.
- —— (1932). "The Nature of the Chemical Bond. IV. The Energy of Single Bonds and the Relative Electronegativity of Atoms". Journal of the American Chemical Society. 54 (9): 3570–3582. Bibcode:1932JAChS..54.3570P. doi:10.1021/ja01348a011.
- ——; Wheland, G. W. (1933). "The Nature of the Chemical Bond. V. The Quantum-Mechanical Calculation of the Resonance Energy of Benzene and Naphthalene and the Hydrocarbon Free Radicals" (PDF). The Journal of Chemical Physics. 1 (6): 362. Bibcode:1933JChPh...1..362P. doi:10.1063/1.1749304. Archived (PDF) from the original on 2022-10-09.
- —— (1935). "The Structure and Entropy of Ice and of Other Crystals with Some Randomness of Atomic Arrangement". Journal of the American Chemical Society. 57 (12): 2680–2684. Bibcode:1935JAChS..57.2680P. doi:10.1021/ja01315a102.
- —— (1940). "A Theory of the Structure and Process of Formation of Antibodies*". Journal of the American Chemical Society. 62 (10): 2643–2657. Bibcode:1940JAChS..62.2643P. doi:10.1021/ja01867a018.
- —— (1947). "Atomic Radii and Interatomic Distances in Metals". Journal of the American Chemical Society. 69 (3): 542–553. Bibcode:1947JAChS..69..542P. doi:10.1021/ja01195a024.
- ——; Itano, H. A.; Singer, S. J.; Wells, I. C. (1949). "Sickle Cell Anemia, a Molecular Disease". Science. 110 (2865): 543–548. Bibcode:1949Sci...110..543P. doi:10.1126/science.110.2865.543. PMID 15395398. S2CID 31674765.
- ——; Corey, R. B.; Branson, H. R. (1951). "The structure of proteins: Two hydrogen-bonded helical configurations of the polypeptide chain". Proceedings of the National Academy of Sciences. 37 (4): 205–11. Bibcode:1951PNAS...37..205P. doi:10.1073/pnas.37.4.205. PMC 1063337. PMID 14816373.
See also
References
Citations
- ^ Linus Pauling at the Mathematics Genealogy Project
- ^ "A Guggenheim Fellow in Europe during the Golden Years of Physics (1926–1927)". Oregon State University. Archived from the original on 2021-10-28. Retrieved 2015-05-27.
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- Pauling, L (November 1978). Ralph Pelligra (ed.). "Orthomolecular enhancement of human development" (PDF). Human Neurological Development: 47–51. Archived (PDF) from the original on 2022-10-09.
- Saul, Andrew W.; Dr. Abram Hoffer. "Abram Hoffer, M.D., PhD 50 Years of Megavitamin Research, Practice and Publication". Doctoryourself.com. Retrieved 2007-08-05.
- Ohno, S; Ohno, Y; Suzuki, N; Soma, G; Inoue, M (2009). "High-dose vitamin C (ascorbic acid) therapy in the treatment of patients with advanced cancer". Anticancer Research. 29 (3): 809–15. PMID 19414313.
- Jacobs, Carmel; Hutton, Brian; Ng, Terry; Shorr, Risa; Clemons, Mark (2015). "Is There a Role for Oral or Intravenous Ascorbate (Vitamin C) in Treating Patients With Cancer? A Systematic Review". The Oncologist. 20 (2): 210–223. doi:10.1634/theoncologist.2014-0381. PMC 4319640. PMID 25601965.
- "Vitamin C Fact Sheet for Health Professionals". National Institutes of Health. Retrieved 2015-06-02.
- "The Linus Pauling Papers: Biographical Information". United States National Library of Medicine. n.d. Retrieved 2011-11-10.
- "Dr. Linus Carl Pauling Jr. Obituary". Honolulu Star-Advertiser. 2023-11-05.
- Petersen, Christoffer Eric, ed. (2022-10-11). "Chapter 17. Peter Pauling by Matt McConnell". Visions of Linus Pauling. World Scientific. pp. 203–240. ISBN 978-981-12-6077-3.
- "Obituary. E. Crellin Pauling '59". Reed Magazine, Reed College. November 1997.
- "Linus Pauling Biography". Linus Pauling Institute. Retrieved 2011-11-10.
- "Oral history interview with Linus Carl Pauling, 1964 March 27". American Institute of Physics. Archived from the original on 2014-08-06. Retrieved 2015-05-27.
- "Linus Pauling". Dictionary of Unitarian & Universalist Biography. Archived from the original on 2018-10-16. Retrieved 2015-05-27.
- Pauling, Linus; Ikeda, Daisaku (1992). A Lifelong Quest for Peace: A Dialogue. Jones & Bartlett. p. 22. ISBN 978-0-86720-277-9.
...I am not, however, militant in my atheism. The great English theoretical physicist Paul Dirac is a militant atheist. I suppose he is interested in arguing about the existence of God. I am not. It was once quipped that there is no God and Dirac is his prophet.
- "Dr. Pauling Rescued, On a Sea Cliff 24 Hrs" (clipping). scarc.library.oregonstate.edu. Special Collections & Archives Research Center, Oregon State University Libraries: New York Herald Tribune. 1960-02-01. Retrieved 2018-04-22.
- Goertzel and Goertzel, p. 247.
- "The Centennial: Who's Buried in Linus Pauling's Grave?" (PDF). Archived (PDF) from the original on 2022-10-09. Retrieved 2012-12-26.
- "Linus Pauling". California Museum. 2012-02-17. Retrieved 2015-06-01.
- "Linus Pauling – Biographical". Nobelprize.org. Nobel Media AB 2014. Retrieved 2016-10-06.
- Hamilton, Neil A. (2002). American social leaders and activists. New York: Facts On File. ISBN 978-0-8160-4535-8. Retrieved 2015-06-01.
- Hoffmann, Roald; Shaik, Sason; Hiberty, Philippe C. (2003). "A Conversation on VB vs MO Theory: A Never-Ending Rivalry?". Acc Chem Res. 36 (10): 750–6. doi:10.1021/ar030162a. PMID 14567708.
- "Pauling Honored by Scientists at Caltech Event". Los Angeles Times. United Press International. 1986-03-01. Retrieved 2012-07-22.
- "Citations for Chemical Breakthrough Awards 2017 Awardees". Division of the History of Chemistry. Retrieved 2018-03-12.
- Pauling, L.; Corey, R. B.; Branson, H. R. (1951). "The structure of proteins: Two hydrogen-bonded helical configurations of the polypeptide chain". Proceedings of the National Academy of Sciences. 37 (4): 205–11. Bibcode:1951PNAS...37..205P. doi:10.1073/pnas.37.4.205. PMC 1063337. PMID 14816373.
- "Linus Pauling Science Center | Department of Chemistry | Oregon State University". chemistry.oregonstate.edu. Retrieved 2016-11-10.
- "Four Legends of American Science Now on U.S. Postage Stamps" (PDF). United States Postal Service Postal News, Release No. 08-23. 2008-03-06. Archived (PDF) from the original on 2022-10-09.
- ^ "OSU Celebrates Linus Pauling and Release of New U.S. Postal Service Stamp". Oregon State University – University Events. Archived from the original on 2013-11-02. Retrieved 2015-02-25.
- "Governor & First Lady Participate in 2008 CA Hall of Fame Induction Ceremony". CA.gov. Archived from the original on 2015-06-02. Retrieved 2015-06-01.
- ^ "Linus Pauling Research Notebooks Online". Natural Science. Archived from the original on 2015-09-05. Retrieved 2015-06-01.
- "Linus Pauling Institute". Lpi.oregonstate.edu. Retrieved 2013-06-25.
- Cole, Gail (2011-10-14). "Linus Pauling Science Center opens at OSU". Corvallis Gazette-Times. Retrieved 2015-06-02.
- "Linus Pauling Science Center – A Moment to Celebrate". Oregon State University Foundation. Archived from the original on 2015-03-29. Retrieved 2015-06-02.
- Zewail, Ahmed (1992). The Chemical Bond Structure and Dynamics. Burlington: Elsevier Science. ISBN 978-0-08-092669-8. Retrieved 2015-06-01.
- Baum, Rudy (1989-12-11). "Caltech launches Linus Pauling lecture series". Chemical & Engineering News. 67 (50): 18–19. doi:10.1021/cen-v067n050.p018a.
- Johnson, Greg (1996-03-20). "Pauling Road Address Fits New Vitamin Factory to a 'C'". Los Angeles Times. Retrieved 2015-06-02.
- Gottlieb, Jeff (2001-08-19). "A New-View University". Los Angeles Times. Retrieved 2015-06-01.
- Woodward, Raju (2012-02-29). "A son's tribute by Linus Pauling Jr". Corvallis Gazette-Times. Retrieved 2015-06-01.
- "Scientist cites Condon years as influential". Register-Guard, Eugene, Oregon. 1988-10-19. Retrieved 2015-06-01.
- Heberlein, L. A. (2002). The Rough guide to internet radio. London: Rough Guides. ISBN 978-1-85828-961-8. Retrieved 2015-06-01.
- Schmadel, Lutz D. (2012). Dictionary of minor planet names (6th ed.). Berlin: Springer. ISBN 978-3-642-29718-2. Retrieved 2015-06-01.
- Moody, Glyn (2002). Rebel Code: Linux and the Open Source Revolution. Perseus Books Group. p. 336. ISBN 978-0-7382-0670-7.
- Agre, Peter (2013-12-10). "Fifty Years Ago: Linus Pauling and the Belated Nobel Peace Prize" (PDF). Science & Diplomacy. 2 (4). Archived from the original on 2014-02-13.
- "Linus Pauling Distinguished Postdoctoral Fellowship | PNNL". www.pnnl.gov.
- Center for Oral History. "Linus C. Pauling". Science History Institute.
- ^ "Linus Pauling: Awards, Honors and Medals". Special Collections. Oregon State University Libraries. Retrieved 2013-04-25.
- "ACS Award in Pure Chemistry". American Chemical Society. Retrieved 2014-01-18.
- "Linus Pauling". Member Directory. National Academy of Sciences.
- "American Philosophical Society Member History". American Philosophical Society.
- "Alpha Chi Sigma Fraternity, Certificate of Membership". Special Collections & Archives Research Center. Oregon State University Libraries. Retrieved 2015-05-27.
- "Linus Carl Pauling". Member Directory. American Academy of Arts and Sciences. 2023-02-09.
- "Societe de Chimie Biologique, Louis Pasteur Medal. 1952 – Linus Pauling: Awards, Honors and Medals". scarc.library.oregonstate.edu.
- Pauling's awards and medals (includes image of Fermat medal).
- "Gandhi Peace Award". Promoting Enduring Peace. Retrieved 2013-04-26.
- "Gold Medal Honorees". National Institute of Social Sciences. Archived from the original on 2019-07-02. Retrieved 2019-07-02.
- "NAS Award in Chemical Sciences". National Academy of Sciences. Retrieved 2015-06-02.
- "Golden Plate Awardees of the American Academy of Achievement". www.achievement.org. American Academy of Achievement.
- "OSU Celebrates Linus Pauling and Release of New U.S. Postal Service Stamp". Events. Oregon State University. Archived from the original on 2013-11-02. Retrieved 2013-04-25.
Bibliography
- Hager, Thomas (1998). Linus Pauling and the Chemistry of Life. Oxford University Press. ISBN 978-0-19-513972-3 – via Internet Archive.
- Marinacci, Barbara; Krishnamurthy, Ramesh (1998). Linus Pauling on Peace. Rising Star Press. ISBN 978-0-933670-03-7.
- Serafini, Anthony (1989). Linus Pauling: A Man and His Science. Paragon House. ISBN 978-1-55778-440-7 – via Internet Archive.
General and cited references
- Hargittai, István (2000). Hargittai, Magdolna (ed.). Candid Science: Conversations with Famous Chemists (Reprinted ed.). London: Imperial College Press. ISBN 978-1-86094-151-1.
- Marinacci, Barbara, ed. (1995). Linus Pauling: In His Own Words: Selected Writings, Speeches, and Interviews. Introduction by Linus Pauling. New York: Simon & Schuster. ISBN 978-0-684-81387-5. online
- Pauling, Linus. Selected Scientific Papers Vol. II online
- Sturchio, Jeffrey L. (1987-04-06). Linus C. Pauling, Transcript of an Interview Conducted by Jeffrey L. Sturchio in Denver, Colorado on 6 April 1987 (PDF). Philadelphia, PA: Chemical Heritage Foundation.
Further reading
- Coffey, Patrick (2008). Cathedrals of Science: The Personalities and Rivalries That Made Modern Chemistry. Oxford University Press. ISBN 978-0-19-532134-0.
- Davenport, Derek A. (1996). "The Many Lives of Linus Pauling: A Review of Reviews". Journal of Chemical Education. 73 (9): A210. Bibcode:1996JChEd..73A.210D. doi:10.1021/ed073pA210.
- Gormley, Melinda. "The first ‘molecular disease’: a story of Linus Pauling, the intellectual patron." Endeavour 31.2 (2007): 71–77 online Archived 2020-10-31 at the Wayback Machine.
- Mead, Clifford. Linus Pauling: Scientist and Peacemaker (2008)
- Morgan, G. J. "Emile Zuckerkandl, Linus Pauling, and the molecular evolutionary clock, 1959–1965." Journal of the History of Biology (1998) 155–178.
- Nakamura, Jeanne, and Mihaly Csikszentmihalyi. "Catalytic creativity: The case of Linus Pauling." American Psychologist 56.4 (2001): 337+.
- Strasser, Bruno J. "A world in one dimension: Linus Pauling, Francis Crick and the central dogma of molecular biology." History and philosophy of the life sciences (2006): 491–512 online.
- Strasser, Bruno J. "Linus Pauling's “molecular diseases”: Between history and memory." American journal of medical genetics 115.2 (2002): 83–93 online.
- White, Florence Meiman. Linus Pauling Scientist and Crusader (1980) online
- Zannos, Susan. Linus Pauling and the chemical bond (2004), 48pp online, for secondary schools
External links
Scholia has an author profile for Linus Pauling.- Linus Pauling Online a Pauling portal created by Oregon State University Libraries
- Crick, Francis, "The Impact of Linus Pauling on Molecular Biology" (transcribed from video at the 1995 Oregon State University symposium)
- The Ava Helen and Linus Pauling Papers at the Oregon State University Libraries
- The Pauling Catalogue
- Center for Oral History. "Linus C. Pauling". Science History Institute.
- Sturchio, Jeffrey L. (1987-04-06). Linus C. Pauling, Transcript of an Interview Conducted by Jeffrey L. Sturchio in Denver, Colorado on 6 April 1987 (PDF). Philadelphia, PA: Chemical Heritage Foundation.
- The Pauling Blog
- Linus Pauling (1901–1994)
- Berkeley Conversations With History interview
- Linus Pauling Centenary Exhibit
- Linus Pauling from The Dictionary of Unitarian and Universalist Biography Archived 2018-10-16 at the Wayback Machine
- "It's in the Blood! A Documentary History of Linus Pauling, Hemoglobin and Sickle Cell Anemia – Special Collections & Archives Research Center – Oregon State University". Oregon State University Library. Retrieved 2015-02-25.
- The Linus Pauling Institute at Oregon State University
- Publications of Pauling
- The Linus Pauling Papers – Profiles in Science, National Library of Medicine
- Linus Pauling Archived July 19, 2019, at the Wayback Machine Documentary produced by Oregon Public Broadcasting
- Oral history interview with Linus C. Pauling from Science History Institute Digital Collections
Awards and achievements | ||
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Preceded byHermann Staudinger | Laureate of the Nobel Prize in Chemistry 1954 |
Succeeded byVincent du Vigneaud |
Preceded byDag Hammarskjöld | Laureate of the Nobel Peace Prize 1962 |
Succeeded byInternational Committee of the Red Cross, League of Red Cross Societies |
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- 1901 births
- 1994 deaths
- 20th-century American biochemists
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- American anti-war activists
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