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Posted
07/03/2014
How Wolves Change Rivers (4:33)
Partners: National Park Service, state agencies, non-governmental organizations, private landowners, and others

Overview

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 in this movie remix.

Last updated: June 3, 2014