Over the last three decades, Yellowstone National Park has undergone an ecological cascade. As elk numbers fell, aspen and willow trees thrived. This, in turn, allowed beaver numbers to increase, ...

A new peer-reviewed study reports that claims of a “world-leading” trophic cascade in Yellowstone National Park are not supported, citing problems with the methods used in earlier research. A newly pu ...

A recent critique by ecologist Dan MacNulty prompted a correction to a widely cited Yellowstone trophic cascade study, shifting downward a headline-making estimate of aspen increase, but leaving ...

Yellowstone National Park could be swarming with wolves again, all thanks to artificial intelligence. It seems that the researchers have hit the bullseye with their new approach to conservation or ...

In Yellowstone National Park — where gray wolves were reintroduced starting in 1995 — researchers have gone back and forth on whether the restoration of wolves has impacted the ecosystem. The idea is ...

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 ...

A grey wolf prowls through Yellowstone National Park near Mammoth Hot Springs in Montana. A group of 66 wolves was reintroduced to Idaho and Yellowstone in the late 1990s. They now total 2,800 ...

Wildlife cameras positioned throughout Yellowstone National Park have captured something researchers didn't expect to see. Adult wolves have been hauling their helpless pups across vast distances ...

Across North America, mountain lions, bears and gray wolves have made a remarkable comeback over the last 50 years. Once nearly exterminated, these animals have been recovering their populations and ...