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NOVA: 36x14

Last Extinction

An examination over whether a comet struck the Great Lakes region 12,900 years ago, and whether it caused the extinction of such mega-creatures as the woolly mammoth and the saber-toothed cat in North America. Also included is the discovery of nano-diamonds which are created by heat and objects from space.

NOVA: 36×14
Mar. 31, 2009

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