How Wolves Change Rivers

Duration: 5 min
Release date: 2014-03-21
IMDB

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.

Documentary

How Wolves Change Rivers

Videos

How Wolves Change Rivers

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