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Human Evolution

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CT scans of Homo sapiens fossils

GETTING OLDER  Roughly 300,000-year-old fossils from Morocco have been attributed to Homo sapiens. CT scans, used to produce these reconstructions, reveal a modern-looking face (left) but a braincase similar to older, now extinct Homo species (right).

horse leg bone and croc tooth

BIG BITE  Crocodiles in East Africa around 2.5 million years ago had teeth (one shown at right) capable of gouging chunks out of prey animals’ bones. A horse’s leg bone (left), also dating to 2.5 million years ago from East Africa, bears marks more like those of croc bites than butchery with stone tools, as previously suspected, a new study finds.  

Masai warriors

NOT TOO VIOLENT  Small-scale human societies, represented here by African Masai warriors, are neither more nor less violent than state societies, a new study concludes. As often happens in investigations of warfare, the report has sparked controversy.

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