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 ...

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 new analysis challenges one of the most publicized claims about Yellowstone's wolves. In a detailed comment published in Global Ecology and Conservation, researchers from Utah State University and ...

Now, the researchers at Yellowstone National Park want to learn wolf language beyond what has been fed to us through fictional imitations. Journalist Matt Standal of PBS Montana arrived at the coveted ...

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 ...

At the age of 11 years, 9 months, Wolf 1090F has earned the title of the oldest living wolf in Yellowstone, which is ...

Colorado Parks and Wildlife could lose authority over the reintroduction of gray wolves in the state, according to a warning ...

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 ...