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NOVA - Season 36 Episode 14

NOVA - Season 36 Episode 14 - Documentary TV Shows 55:14. story about 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.

Released: Mar 03, 1974

Runtime: 55:14

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Networks: PBS

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