The green corridor hypothesis, which explains early human migration from Africa, has been strengthened by evidence of ancient rivers that flowed north through the Sahara desert some 100,000 years ago. Geological data suggest that a wetter climate during the period between the last two ice ages produced rainfall on the mountain ranges in the Sahara and created green corridors through which early modern humans migrated from Africa. The obstacle of the Sahara desert to human dispersal has long raised questions about the migration of Homo sapiens who originated in sub-Saharan Africa. The green corridor theory suggests rivers would have provided fertile habitats for animals and crops allowing humans to migrate north. Geographers from the University of Hull have produced what they say is the strongest evidence yet for the hypothesis by producing a computer simulation of the palaeoclimate in northern Africa, which models the flow of water across the region.
Posted on: Fri, 11 Oct 2013 14:49:27 +0000
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