How wolves change rivers

5 minutes

How the return of just 66 wolves rejuvenated Yellowstone’s entire ecosystem

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/Life Stages

Harlem’s over-55s synchronised swimming team thinks ageing is better in the pool

4 minutes

ORIGINAL
Video/Data & Information

The information age traffics in speed. To adapt to it wisely, we must slow down

5 minutes

Video/Demography & Migration

The island where 50 million crabs roam free and refugees are trapped in limbo

21 minutes

Essay/Quantum Theory

Quantum common sense

Despite its confounding reputation, quantum mechanics both guides and helps explain human intuition

Philip Ball

Video/Cosmology

The Sun – our steady, reliable companion – tells a very different story up close

4 minutes

Idea/Physics

The idea of creating a new universe in the lab is no joke

Zeeya Merali

Video/Physics

The mathematics of music means piano strings can never be in perfect harmony

4 minutes

Essay/Computing & Artificial Intelligence

fAIth

The most avid believers in artificial intelligence are aggressively secular – yet their language is eerily religious. Why?

Beth Singler

Idea/Biology

Bad mothers and why they make a difference to cheetah survival

Anne Hilborn