How Wolves change Rivers.
When the government reintroduced Wolves back into the Yellow Stone area (National Park) they had no idea how it would work.
This is one of the most enlightening videos you will ever see related to biodiversity and good/natural/sustainable ecosystems. In this case, this is recreating a more sustainable ecosystem from the past...
... But we as a people have devoted our existence, to date, of changing the ecosystems were we live and operate. The costs of doing so, are great!:-(
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