Nova: Season 41, Episode 16 - ProjectFreeTV

41 - 16: Wild Predator Invasion

A growing number of scientists are discovering that removing top predators from the wild has thrown ecosystems off-kilter, triggering domino effects that scientists are just beginning to understand. NOVA follows scientists who are trying out a simple but controversial solution: returning apex predators — like coyotes, bears and panthers — to their natural environments.