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How Wolves Change Rivers

Education Written on 2017.08.27 16:15

"When we try to pick out anything by itself, we find it hitched to everything else in the Universe."
- John Muir

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.

This video is a gift to humanity by Chris and Dawn Agnos (Sustainable Human)

[TED] George Monbiot: For more wonder, rewild the world
Wolves were once native to the US' Yellowstone National Park -- until hunting wiped them out. But when, in 1995, the wolves began to come back (thanks to an aggressive management program), something interesting happened: the rest of the park began to find a new, more healthful balance. In a bold thought experiment, George Monbiot imagines a wilder world in which humans work to restore the complex, lost natural food chains that once surrounded us. (TED Talks)

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