How Wolves Change Rivers
Movie · 0h 5m
Documentary
Starring 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.
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Show info
First airedMarch 21, 2014
StatusReleased