Scientists debunk decades-long study claiming wolves' reintroduction triggered a dramatic transformation in Yellowstone.

Thirty years ago, park rangers reintroduced grey wolves into Yellowstone National Park. They wanted to restore the ecosystem and get the elk population, which had decimated the plant community, in ...

Previous research on the effect of wolves on the food web has been criticized, raising questions about the predator’s role in the Yellowstone ecosystem.

After they were captured in Canada, the wolves released in Yellowstone National Park initially stayed in acclimation pens, like this wolf pictured in the Crystal Creek pen on Jan. 26, 1996. (Photo ...

2025 marks 30 years since the federal government reintroduced wolves to the western United States, one of the most successful and controversial wildlife programs in U.S. history. To mark the ...

Yellowstone National Park is celebrating an ecological milestone along with a key anniversary this summer, Oregon State University researchers report. A paper published in Forest Ecology and ...

The restoration of gray wolves in Yellowstone National Park has helped revive an aspen tree population unique to the region, a new study has found. Quaking aspen, one of the few deciduous tree species ...

This article is part of The State of Science, a series featuring science stories from public radio stations across the United States. This story, by Heath Druzin, was originally published by Boise ...

This is the second story in a two-part series recapping Colorado’s second year of wolf reintroduction.  When Coloradans ...