Uploaded August 2015 | Updated September 2026, 3 hours ago

---

View how the re-introduction of wolves into the Yellowstone park in 1995 after 70 years of absence dramatically changed behaviour of creatures therein as well as the immediate ecology... for the better!

Video Source: youtu.be/ysa5OBhXz-Q
Video Channel: youtube.com/channel/UCYv_csqWJTSfQK3vOZDJKQw


If you likes How Wolves Change Rivers, check out How Whales Change Climate: https://www.youtube.com/watch?v=M18Hx...

For more from George Monbiot, visit monbiot.com and for more on "rewilding" visit bit.ly/1hKGemK and/or check out George Monbiot's book Feral: rewilding the land, the sea and human life: amzn.to/1fjgirx

NOTE: There are "elk" pictured in this video when the narrator is referring to "deer." This is because the narrator is British and the British word for "elk" is "red deer" or "deer" for short. The scientific report this is based on refers to elk so we wanted to be accurate with the truth of the story.

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

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.


Narration from TED: "For more wonder, rewild the world" by George Monbiot. Watch the full talk, here: bit.ly/N3m62h

B-Roll Credits:
"Greater Yellowstone Coalition - Wolves" (bit.ly/1lK4LaT)
"Wolf Mountain" (bit.ly/1hgi6JE)
"Primodial - Yellowstone" (vimeo.com/77097538)
"Timelapse: Yellowstone National Park" (bit.ly/1kF5axc)
"Yellowstone" (bit.ly/1bPI6DM)
"Howling Wolves - Heulende Wölfe" (bit.ly/1c2Oidv)
"Fooled by Nature: Beaver Dams" (bit.ly/NGgQSU)

Music Credits:
"Unfoldment, Revealment, Evolution, Exposition, Integration, Arson" by Chris Zabriskie (bit.ly/1c2uckW)

This video was edited by Steve Agnos with editorial assistance from Chris Agnos (who also conceived the idea for the video) the brothers behind Sustainable Man. For more from Steve Agnos visit vimeo.com/steveagnos or vimeo.com/thesustainableman

For any concerns or questions, you may contact us at sustainableman.org/contact

FAIR USE NOTICE: This video may contain copyrighted material. Such material is made available for educational purposes only. This constitutes a 'fair use' of any such copyrighted material as provided for in Title 17 U.S.C. section 106A-117 of the US Copyright Law.