Climate may have influenced the evolution of humans and other humanlike species
By Stephen Ornes, 17:55 PM April 4, 2012
If you were to trace human evolution backward in time and space, you’d eventually end up in Africa. There, millions of years ago, animal species evolved to walk upright on two legs and spend more of their lives on the ground than in the trees. Homo sapiens, the species you belong to if you’re reading this article, had appeared on the continent by 200,000 years ago. Your ancestors weren’t alone: Other upright, humanlike species were also around — at least for a while.
Scientists agree on Af...
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