A mountain chickadee peers down from its perch in a ponderosa pine. Click here for larger image. Photo by Jeff Mitton. As the most recent glaciers subsided, ponderosa pines move north from their ...

BOULDER - Western U.S. forests killed by the mountain pine beetle epidemic are no more at risk to burn than healthy Western forests, according to new findings by the University of Colorado Boulder ...

Ponderosa pine forests in the Sierra Nevada that were wiped out by western pine beetles during the 2012-2015 megadrought won't recover to pre-drought densities, reducing an important storehouse for ...

A persistent pest killing parched pines in Spokane’s oldest municipal golf course prompted park officials to take the extraordinary step of cutting down dozens of trees this winter. Earlier this month ...

VANCOUVER, British Columbia (Reuters) - Voracious beetles that have ravaged more than 9 million hectares (35,000 square miles) of British Columbia's forests have wiped out about 40 percent of the ...

Bark beetles are only about the size of a grain of rice. But for such tiny critters, they can take a big bite out of the forest. There are more than 100 species of bark beetles in Idaho, said Gina ...

The mountain pine beetle infestation that has ravaged forests in the western United States and Canada in recent years appears to be losing its grip. Green saplings are rejuvenating previously ...

The Naches Ranger District, part of the Okanogan-Wenatchee National Forest, spans 518,000 acres near Naches to the Cascades in the William O. Douglas, Norse Peak and Goat Rocks wildernesses and the ...

A western pine beetle rests on a sap mound on a pine tree. - Charles Wollertz/Getty Images A thriving pine tree is a thing of beauty, but what if your pine tree doesn't seem so healthy? If you notice ...

Minnesota agriculture officials are sounding the alarm for yet another invading insect. This time it’s the mountain pine beetle that’s already devastating forests of the Rocky Mountains and has moved ...

A pine beetle epidemic in Colorado is killing hundreds of thousands of trees and turning the state's forests brown. Elise Thatcher, a producer for Colorado Matters on Colorado Public Radio, says there ...