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Sunday, July 5, 2009 |
Photo: Americas Settled 15,000 Years Ago, Study SaysThe remains are part of a growing body of genetic and archaeological evidence suggesting that humans crossed the Bering land bridge about 22,000 years ago, then moved southward relatively late after melting ice cleared a path through Canada, a new study says. Photograph courtesy D. Joyce
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ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAYWhat's Your Green Idea?
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