Young aspens often don't survive because of factors such as grazing elk, according to a study by Northern Arizona University ...

Warming temperatures continuously impact mankind, wildlife, major corporations and propositions at all levels of government, ...

Essentially, the aspen forest has been littered with young trees that are not capable of growing up and reaching adulthood.

Fall brings out the best in the city's trees and shrubs as colorful leaves brighten up landscapes. Ash, aspen and cottonwoods are prominent this time of year, but there are other trees (and shrubs ...

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 ...