No main cast listed for this episode.
NOVA — S36E14
Episode: Last Extinction
Air Date: 2009-03-31
Runtime: 55 min
Overview
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.