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 ...

Colorado’s fall colors in the state’s mountains are emerging a couple of weeks early in 2025 as yellows and oranges are beginning to appear ahead of the annual September change over. At locations like ...

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.

A new study from Colorado State University, Western Colorado University and the U.S. Forest Service found evidence that stands of aspen trees could resist wildfires by slowing a fire's advance or ...