NOVA: Wild Predator Invasion
Preview | 30s
Removing predators from the wild has triggered domino effects scientists are just beginning to understand. Can returning wolves, bears, and panthers to their natural environments restore balance without threatening humans who live among them? (Also Fri. 4/4 at 3AM; Sun. 4/6 at 1PM)
Aired: 04/02/14
Expired: 04/02/14
