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Video: How wolves can alter the course of rivers

Video: How wolves can alter the course of rivers

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Wolves will travel to drink from a river. But could the presence of wolves lead a river to change its behavior? In his TED Talk, George Monbiot poetically explains how reintroducing wolves to Yellowstone National Park after a 70-year absence set off a “trophic cascade” that altered the movement of deer, sent trees soaring to []