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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

HAMILTON - The mountain pine beetle gets most of the blame for killing vast swaths of evergreens across the West. But there's another tree-munching insect that's causing trouble in the Bitterroot ...

Mountain pine beetle-killed trees at Lookout Pass in 2002. Provided by Idaho Dept of Lands. Bark beetles are only about the size of a grain of rice. But for such tiny critters, they can take a big ...

Jan. 21—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 ...