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It became the basis for most written languages, beginning 4,000 years ago in the Sinai desert.
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In a remote cave, in North West Africa, a chance discovery uncovered some mysterious human remains.
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These monkey bones showed that early humans could thrive in the rainforest.
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Early humans may have brought offerings to this enormous stone snake.
2:59
Inside the Tunnel of Bones, a macabre Neanderthal mystery unfolds.
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Ancient bones reveal that early Homo sapiens and Neanderthals didn’t just coexist.
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A small piece of insulation caused catastrophic damage.
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This form of bear hunting took nerves of steel.
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These giant stone heads were not dragged on sleds, as once thought.
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AI-generated photos are video are getting so good that it’s hard for humans to tell what’s real.
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In recent decades, there's been renewed interest in studying ibogaine.
