We anticipate there to be anywhere from twice as much, to three times as much, activity as we saw last year,” says Dan West, a Colorado State Forest Service entomologist. “That is startling.” ...

Pine beetles are making a comeback and killing ponderosa pines across large swaths of Colorado forests, especially along the state's Front Range, as seen here near Interstate 70 and Soda Creek Rd in ...

Boulder wants to sue oil companies for financial damages from global warming.

Helena's recent wave of brutally cold temperatures probably isn't doing much to beat back the mountain pine beetle infestation that's killing hundreds of thousands of evergreen trees around here.

Add Yahoo as a preferred source to see more of our stories on Google. Residents are being asked to inspect hardwood trees for signs of the invasive Asian longhorned beetle as federal and state ...

ALBANY — A bark beetle that has devastated southern pine forests is moving north as the climate warms, and new research suggests cool weather could amplify its attacks. Dartmouth researchers say ...

They’re not out of the woods yet. Long Island’s vulnerable pine barrens, recently ravaged by wildfires last March, are facing another threat in the form of an invasive species that could spell another ...