NOVA - Season 36 Episode 14
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.
- Zhanri: Documentary
- Studio: PBS
- Fjalen: nature, candid, inspirational, factual, dramatic, informative, instructive
- Cast:
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
