An insect known for turning entire mountainsides the color of rust could be making a resurgence in Colorado. The pest is none ...

Sawmill Reservoir is a hidden sanctuary, looming in the shadows of the Rockies and quietly sits among shady pine trees and blooming wildflowers, just west of Colorado's coolest college town.

Pest-infested trees may appear in shades of brown, red or gray, according to the report. Each region in Colorado faces a different threat. The report found that the mountain pine beetle and ...