The contrast of the smooth, pale gray bark and bright orange leaves of aspen trees in the fall is a sight to behold in Arizona's higher elevations. But this beautiful display is under threat from an ...

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 ...

It’s not just the lodgepole pines that are dying in the Colorado mountains. Thirteen percent of aspen trees in the state are now affected by Sudden Aspen Decline, which is caused by disease and ...

New research from Western Colorado University shows that the long-held conventional belief about aspen trees being resilient to wildfires is more than just an anecdotal assumption. Matt Harris, a ...

On the shoulder of Kebler Pass, about seven miles west of Crested Butte, a giant lounges in the Colorado high country. The Kebler Pass aspen stand covers the equivalent of just over 100 football ...

Getting your Trinity Audio player ready... Fall leaves in Smith Lake at Washington Park on Oct. 21, 2019 in Denver. (Photo by RJ Sangosti/The Denver Post) Look beyond Colorado’s shimmering yellow ...