FLAGSTAFF — Beneath the scenic yellow and red leaves of soaring aspen trees in the Kachina Wilderness, forest ecologist Mike Stoddard is looking down. His concern isn’t the brilliant fall foliage but ...

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.

DENVER — Something is killing the quaking aspen trees of the Rocky Mountain West. The slender, white-barked trees that paint the hills gold every autumn are dying, some scientists say, leaving bald ...

Andrew Richardson, an ecologist at Northern Arizona University, maintains a camera at Hart Prairie, about 8,000 feet above sea level on the west side of the San Francisco Peaks near Flagstaff. While ...

The restoration of gray wolves in Yellowstone National Park has helped revive an aspen tree population unique to the region, a new study has found. Quaking aspen, one of the few deciduous tree species ...

The Arizona Snowbowl Ski Resort began work on a realignment of its Aspen Chairlift this week. The project comes after a new memorandum of agreement was created by the Coconino National Forest. None of ...