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Video: How wolves change rivers

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Do yourself a favor and watch this video on how wolves change rivers. It will make you happy. It's also extremely informative, as it illustrates the extraordinary 'cascade' effect downward of this change from high on the food chain to every other part of Yellowstone National Park, when the extinct wolves were reintroduced after an absence of seventy years.

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Beautiful video, inspiring and educational. Beave... by Daniel Geery on Tuesday, Mar 4, 2014 at 12:22:06 PM
Wow.  I was lukewarm toward wolves until this... by Robert James on Tuesday, Mar 4, 2014 at 1:31:16 PM
Remarkable connectedness shown here, thanks for re... by anna kakol on Tuesday, Mar 4, 2014 at 4:33:43 PM