SEGOVIA, SPAIN—When archaeologists were sifting through layers of sediment from the San Lázaro rock shelter in Segovia, Spain, they noticed an unusual looking stone that seemed to contain a small red ...
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Why modern human faces differ from Neanderthals
Modern human faces are surprisingly delicate compared with the jutting jaws and broad noses of our closest extinct cousins. The contrast is not just cosmetic, it reflects deep differences in growth, ...
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