Fascinating changes in ecosystems based on introducing a new apex predator.
How Wolves Change Rivers
By
When wolves were reintroduced to Yellowstone National Park after being absent for almost 70 years, their presence had an astounding effect on nearly everything in the park. Writer and Environmentalist George Monbiot explains the impact they had in this video from Sustainable Man.
February 25, 2014 at 1:55PM
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