Yellowstone’s reintroduction of wolves in 1995 is one of the best-known instances of a trophic cascade – a single change in a food chain that transforms an entire ecosystem. The return of the wolves rejuvenated wildlife in the park from top to bottom, even changing the area’s physical geography as native animals and plants reasserted themselves. Narrated by George Monbiot, How Wolves Change Rivers chronicles how Yellowstone’s extraordinary success in rewilding stems from a decrease in invasive and overpopulated species such as coyote and deer thanks to just 66 wolves returning after a 70-year absence from the park.
Video by Sustainable Human
videoHistory
In Stalin’s home city in Georgia, generations clash over his legacy
20 minutes
videoHistory
In the face of denial, this film uncovers the hidden scars of Indonesia’s 1998 riots
21 minutes
videoEcology and environmental sciences
Join endangered whooping cranes on their perilous migratory path over North America
6 minutes
videoEnvironmental history
In Kazakhstan, ‘atomic lakes’ still scar the landscape decades after Soviet nuclear tests
13 minutes
videoNature and landscape
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5 minutes
videoMeaning and the good life
Why Orwell urged his readers to celebrate the spring, cynics be damned
11 minutes
videoHistory
Hags, seductresses, feminist icons – how gender dynamics manifest in witches
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videoEarth science and climate
Images carved into film form a haunting elegy for a disappearing slice of Earth
3 minutes
videoAnimals and humans
Join seabirds as they migrate, encountering human communities along the way
13 minutes