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Rolling Back the Years

Radiocarbon dating gets a remake

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1:15pm, November 27, 2007

Archaeologists agree that Neandertals lost their evolutionary fight with Homo sapiens to become the Earth's dominant humanoid life form. But controversy continues over how long that fight lasted, and whether it was modern humans or changing climate that played the primary role in orchestrating the Neandertals' demise.

Scientists dispute how long Neandertals overlapped with modern humans. Some experts say that Neandertals hung around until as recently as 24,000 years ago. Others insist th

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