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Science Friday Initiative
Science Friday: A 10,000 Year Stopover en Route to the New World
The ancestors of Native Americans may have lived for millennia on the Bering land bridge before fanning out across the Americas.
Khan Academy
Khan Academy: Tree of Life: Human Prehistory 101 Part 2: Weathering the Storm
Third in a series of videos that introduces human prehistory, this video describes how early humans continued to defy the odds and populated the Americas during the last Ice Age. [3:25]