A spruce, with rust-red coloring that is the usual result of beetle infestation, is seen on July 7 on the Mount Healy Overlook Trail in the front country of Denali National Park and Preserve. The ...

Crews from the city of Cheyenne Urban Forestry Division will be begin spraying spruce trees next week to prevent ips beetle infestation at several city parks and city-owned ...

A spruce under attack by the spruce beetle, however, can seem healthy enough, Grand Valley Ranger District Forester Christie LaDue said. The needles on affected trees will turn gray, but the effect is ...

Foresters will treat as many as 120,000 acres of lands on the Grand Mesa, Uncompahgre and Gunnison national forests to limit the effects of the spruce beetle and aspen decline. The spruce beetle and ...

Nature gives rise to fascinating adaptations, which can sometimes lead to organisms living in some strange situations. The relationship between bark beetles, spruce trees, and a type of fungus is a ...

CLAUSTHAL-ZELLERFELD, Germany (AP) — Nestled in the spruce trees in the Harz mountains of northern Germany is a bark-eating pest not much bigger than a sesame seed. Known as “book printers” for the ...

Add Yahoo as a preferred source to see more of our stories on Google. Trees produce antibodies against harmful fungi. But bark beetles absorb these antibodies and use them to their own advantage. And ...

A new machine-learning system developed at the University of Alaska Fairbanks can automatically produce detailed maps from satellite data to show locations of likely beetle-killed spruce trees in ...

A new University of Colorado Boulder study indicates drought high in the northern Colorado mountains is the primary trigger of a massive spruce beetle outbreak that is tied to long-term changes in sea ...

Another 338 square miles of high-altitude forests in Southwest Colorado fell to the spruce beetle outbreak in 2013, according to an annual aerial survey of Colorado’s forests. The bugs are now firmly ...

CHEYENNE, Wyo. | The U.S. Forest Service says an outbreak of spruce beetles is spreading at an accelerating rate across hundreds of square miles of new forest in Colorado. Meanwhile, a massive ...

Along with the tourist crowds that are flocking to Denali National Park and Preserve is another arrival: Masses of beetles have burrowed into the park’s spruce trees and begun killing them off. The ...