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 ...

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 ...

Yellowstone has opened the eyes of experts to another ecological phenomenon, which has been linked to the return of wolves in the area. It has been explained in detail within the journal Forest ...

The bark of the aspen tree, it turns out, works pretty well as a canvas. Shepherds in the West made carvings in aspen trees, and they’re still to be found in Colorado, California and other states. The ...

Riders during Stage 1 of the Colorado Classic in Steamboat Springs in 2019. Aspen trees are the mostly widely distributed native tree species in North America, found throughout many northern U.S.