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Watch NOVA Season 36 Episode 14 Online
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- COUNTRIES: United States of America
- Subtitles: English
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.
