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Scientific American Frontiers

Season 14 • Episode 6 • Coming Into America

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Scientific American Frontiers Season 14, Episode 6: Coming Into America

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“Coming into America” explores how prehistoric immigrants (host Alan Alda calls them “the true American pioneers”) might have arrived here---up to 20,000 years ago. Conventional wisdom has been that the “Clovis people” made their way down from Siberia about 13,000 years ago and spread out. But archaeologists interviewed point to artifacts in various places around the U.S. that are far older---and there's evidence that the ice sheets remained in place longer than previously thought---casting doubt on that theory. Watch Scientific American Frontiers Season 14, Episode 6 Coming Into America in HD free online. Enjoy high-quality streaming of Scientific American Frontiers Season 14, Episode 6 and share your thoughts in the comments below!

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Episodes

6 episodes
1

Losing It

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2

Don't Forget

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3

Future Car

60 min
4

Hot Times in Alaska

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5

The Dark Side of the Universe

60 min
6

Coming Into America

“Coming into America” explores how prehistoric immigrants (host Alan Alda calls them “the true American pioneers”) might have arrived here---up to 20,000 years ago. Conventional wisdom has been that the “Clovis people” made their way down from Siberia about 13,000 years ago and spread out. But archaeologists interviewed point to artifacts in various places around the U.S. that are far older---and there's evidence that the ice sheets remained in place longer than previously thought---casting doubt on that theory.

60 min