Glaciers of Kibo peak
Kibo is the highest peak of Mount Kilimanjaro, and the only one to substain rare tropical glaciers.
Glacial retreat
It is generally accepted that the glaciers on top of Kilimanjaro have been retreating since the end of the little ice age, approximately 150 years ago. The speed of retreat appears to have accelerated in recent decades, raising questions about human contributions. Scientific concensus is that humans are directly contributing to this retreat. There are several theories to explain this, as explored below.
Global warming
Further information: Global warmingScientists who support the theory that global warming — caused by the greenhouse effect — is responsible point towards the dramatic temperature rise from a natural cooling trend lasting from 1940 to 1980. They argue that this warming trend is directly responsible for the retreat of the glaciers on Kilimajero through warming temperatures, and indirectly through effects on local climate.
Those who believe in the theory of global warming point out that this ... is unprecendended. Kilimanjaro has survived major droughts before, notably ...
In any case, recent studies state that it is impossible to rule out that a global change in the atmosphere is contributing.