How Wolves Change Rivers

How Wolves Change Rivers

2014 Documentary • 5 min

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.

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Cast

George Monbiot
George Monbiot
Narrator

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