It's hard to imagine that just 40,000 years ago, there was another species of humans on Earth. Modern humans and Neanderthals lived amongst each other, they interbred, lived in the same caves, hunted ...
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Did UV Rays Doom Neanderthals?
What happened to the Neanderthals? Our ancestral cousins went mysteriously extinct around 40,000 years ago, while humans did not. The demise of one and survival of the other continues to flummox ...
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