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 is a great example of how it is vitally important that we learn to live in harmony with planet earth. She has a remarkable ability to heal herself if given the chance.
This is a great example of how it is vitally important that we learn to live in harmony with planet earth. She has a remarkable ability to heal herself if given the chance.
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