Thirty years ago, park rangers reintroduced grey wolves into Yellowstone National Park. They wanted to restore the ecosystem ...

"When you disturb ecosystems by changing the makeup of a food web, it can lead to lasting changes that are not quickly fixed.

Johnnie LeFaiver took her son to the Lamar Valley in Yellowstone National Park this summer, because the experience of watching wolves there 20 years ago seared into her memory and ...

America’s national parks are more than postcard-pretty landscapes. They’re raw, untamed arenas where nature’s drama unfolds ...

Three decades after wolves were reintroduced in Yellowstone National Park, aspen stands are recovering, a new analysis ...

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 ...

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 ...

Plus, how the narrative of the Yellowstone wolf legacy could affect wolf reintroduction elsewhere. Curious about other science controversies? Email us at [email protected].

(SOUNDBITE OF WOLVES HOWLING) HUANG: You actually went backpacking with Doug Smith, the wolf biologist who helped put wolves back into Yellowstone National Park.

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 ...

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 ...