An anonymous reader writes "Bigger eyes and a corresponding greater allocation of the brain to process visual information is the most recent theory about the reasons that led to the extinction of Neanderthals, our closest relatives. Neanderthals split from the primate line that gave rise to modern humans about 400,000 years ago. This group then moved to Eurasia and completely disappeared from the world about 30,000 years back. Other studies have shown that Neanderthals might have lived near the Arctic Circle around 31,000 to 34,000 years ago."
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