Add Yahoo as a preferred source to see more of our stories on Google. After decades of decline, the aspen forests of northern Yellowstone are finally making a comeback, and believe it or not, it’s all ...

Add Yahoo as a preferred source to see more of our stories on Google. FLAGSTAFF — Beneath the scenic yellow and red leaves of soaring aspen trees in the Kachina Wilderness, forest ecologist Mike ...

Aspen trees are getting a boost from wolves at Yellowstone National Park, new research suggests. For the first time in 80 years, baby aspens are growing tall and healthy in the northern part of the ...

Learn more about why the story of how wolves saved Yellowstone National Park’s aspens is more complicated — and more instructional — than it appears.

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.

Long ago, Hispanic sheepherders carved names, dates and drawings into Valles Caldera’s aspens. Can a small team of surveyors record the etchings before they disappear?

A biologist for the Wisconsin Department of Natural Resources (WDNR) spotted an incredibly rare animal earlier this winter, ...

Question: What’s the difference between a popple tree and an aspen? I hear the terms used interchangeably. Answer: Popple (or poplar) are common names for aspen trees because their genus is populus, ...