Colorado State Forest Service entomologist Dan West says the first reports of yellowing aspen leaves started in mid-August. By late last week, as sightings of possible fall foliage continued across ...

Young aspen trees in Yellowstone are doing something they have not done in almost 100 years. Rather than sprouting and being eaten back to nubs by elk and bison, they’re actually growing into tall, ...

Scientists say wolves helped save aspen trees in Yellowstone by eating the elk that were gobbling aspen saplings. But now bison are moving in on the aspen, eating it and knocking the trees over.

After decades of decline, the aspen forests of northern Yellowstone are finally making a comeback, and believe it or not, it’s all thanks to the return of certain carnivores. A new long-term study has ...

According to The Washington Post, the only apex predators that roamed Yellowstone National Park for most of the 20th century were bears and cougars after wolves were eliminated from the area. The ...

On one of the friendliest platforms imaginable, a ferocious battle rages. While mowing its way through the surface of a trembling leaf, an aspen leaf miner meets one of its kind. Instead of offering a ...

New aspen trees are taking hold in Yellowstone National Park, thanks to wolves reintroduced thirty years ago, and western Colorado could eventually see similar benefits. A study released last week ...

Aspen forest is reclaiming the skyline of Yellowstone National Park after decades of controversy over efforts to return wolves to the ecosystem. The successful growth of a new Aspen overstory for the ...

Aspen forests help slow the spread of wildfires and could serve as fire breaks in Colorado and other southwestern states, according to a peer-reviewed study by Western Colorado University researchers.

Aspen trees are making a comeback at Yellowstone National Park. NPS / Diane Renkin Aspen trees are getting a boost from wolves at Yellowstone National Park, new research suggests. For the first time ...