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 ...

Aspen trees have seen better days, but gray wolves are helping them out. Yellowstone National Park isn't just home to geysers like Old Faithful. There's also plenty of wildlife, from the Yellowstone ...

This winter saw the most wolves from Yellowstone National Park killed in about a century. That's because states neighboring the park changed hunting rules in an effort to reduce the animals' numbers.

Don't miss the big stories. Like us on Facebook. There is a meme online about how the reintroduction of wolves saved Yellowstone’s biodiversity. The story goes that deer had been allowed to overrun ...