Figure 1 : Human migration out of Africa.

From: Climate and the peopling of the world

Figure 1

Previous studies1,2 of human migration out of Africa, using fossil, archaeological and genetic evidence, have provided a timeline of the human global dispersals shown. Timmermann and Friedrich3 used linked climate, vegetation and human-dispersal models to understand how climate change may have paced the tempo of human migrations out of Africa. Their results support the view that climate may have been a key factor, but show both similarities and differences when compared with the results of previous studies. One notable difference is that Timmermann and Friedrich suggest a much earlier arrival of modern humans in Europe.