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Homo erectus wasn't the first human species to leave Africa 1.8 million years ago, fossils suggest

A new analysis of enigmatic skulls from the Republic of Georgia suggest that Homo erectus wasn't the only human species to ...
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What was the first human species?

All humans today are members of the modern human species Homo sapiens — Latin for "knowing man." But we're far from the only humans who ever existed. Fossils are revealing more and more about early ...