Origin of the species

As much as some people want to believe that humans began life in the Garden of Eden and were soon cast out, it looks as if a team of researchers, led by Sarah Tischkoff of The University of Pennsylvania, have narrowed the location of humanity’s origins to the border between Namibia and Angola. 

Dr. Tishkoff’s team has also calculated the exit point from which a small human group — maybe a single tribal band of 150 people — left Africa some 50,000 years ago and populated the rest of the world. The region is near the midpoint of the African coast of the Red Sea.

Dr. Tishkoff and her colleagues found that the 14 ancestral African populations they detected are now highly mixed, with the exception of the Bantu speakers.


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