"Painter et al. claim that large-carnivore recovery in Yellowstone National Park has produced a strong trophic cascade compared to other systems, citing a 152-fold increase in aspen sapling density ...

Thirty years ago, park rangers reintroduced grey wolves into Yellowstone National Park. They wanted to restore the ecosystem and get the elk... How the wolf changed Yellowstone 30 years after ...

Few modern wildlife stories are as famous as Yellowstone’s wolves. After wolves were reintroduced to the park in the 1990s, the comeback became linked to a powerful idea: predators returned, elk ...

After nearly three decades of celebrating the reintroduction of wolves to Yellowstone, scientists now question the extent of their impact on the ecosystem. A new study challenges the widely accepted ...

A flare up of a disease that’s especially lethal to wolf pups took a toll on Wyoming and Yellowstone National Park wolf numbers in 2025, reducing biologists’ counts to a level last seen when wolves ...

Yellowstone National Park is often told as a story of recovery. Wolves returned and then elk changed their behavior. Willows and aspens then rebounded and rivers, it is said, changed course. The ...