The human race was divided into two separate groups within Africa for as much as half of its existence, says a Tel Aviv University mathematician. Climate change, reduction in populations and harsh conditions may have caused and maintained the separation.
Όχι ρε παιδιά, τους έφτιαξε ο Θεός...
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http://www.sciencedaily.com/releases/2008/05/080515154635.htm
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