How Wolves Change Rivers(2014)
5 min · Documentary · Directed by George Monbiot
Released
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.
Where to watch
Not available to stream, rent, or buy in the US yet.
US release dates
No US dates announced yet.
