NOVA

Season 36, Episode 14

Episode Title: Last Extinction

Air Date: 2009-03-31

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.