Earth Wobbles May Have Driven Ancient Humans Out of Africa
Ancient human migrations out of Africa may have been driven by wobbles in Earth’s orbit and tilt that led to dramatic swings in climate, a new study finds.
Recent archaeological and genetic findings suggest that migrations of modern humans out of Africa began at least 100,000 years ago, but most humans outside of Africa most likely descended from groups who left the continent more recently – between 40,000 and 70,000 years ago.
Previous research suggested that shifts in climate might help explain why modern human migrations out of Africa happened when they did.
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