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A drastic shift in the tropical African climate many thousands of years ago may have given a significant push to early human evolution, a new study says.
Before about 70,000 years ago, the climate in parts of Africa was wildly variable, with extreme droughts occasionally completely drying up lakes and ******* off many plant and ****** populations.
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Before about 70,000 years ago, the climate in parts of Africa was wildly variable, with extreme droughts occasionally completely drying up lakes and ******* off many plant and ****** populations.
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