Documentary
How Wolves Change Rivers
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.
Directed by George Monbiot
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Status
Released
Released
March 21, 2014
Runtime
5m
Language
English
