How Wolves Change Rivers
Synopsis: 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.
Quality: HD
Duration: 5 min
Release: 03/21/2014
IMDb Rating: 0.0/10
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