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
For $5 a month, you'll gain access to over 50 patron-exclusive documentaries while keeping us ad-free and financially independent. We need 350 more Patrons to grow our team in 2024.
Subscribe here
Our 6000+ video library is 99% free, ad-free, and entirely community-funded thanks to our patrons!