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