How Wolves Change Rivers

Name: How Wolves Change Rivers
Genre: Documentary
Released: 2014-03-21T00:00:00.000Z
Duration: 5 min
Rating: 4
Cast: George Monbiot

When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable "trophic cascade" occurred. What is a trophic cascade and how exactly do wolves change rivers? George Monbiot explains.