The mountain pine beetle, dendroctonus ponderosae, is native to the forests of western North America. Mountain pine beetles, as those involved in forestry know, have been around for a long time but ...

The pine forests of North America have been under attack from the mountain pine beetle for well over a decade. The population of the destructive beetle first exploded in British Columbia in the early ...

Mountain pine beetle sap, also known as pitch, appears as popcorn-like globs or masses on the tree's bark, often near entry points where beetles bore into the tree. This example was observed Monday, ...

A new University of Colorado Boulder study indicates the infestation of trees by mountain pine beetles in the high country across the West could potentially trigger earlier snowmelt and increase water ...

Add Yahoo as a preferred source to see more of our stories on Google. 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 ...

A mountain pine beetle left a pitch tube left in this pondersoa pine as other dead trees stand in the background in Black Forest. (Christian Murdock) Gov. Jared Polis has issued an executive order ...

Vast swaths of the ponderosa pine forests that blanket Colorado’s Front Range mountains could turn rust-colored and die over the next five years as pine beetles begin to spread aggressively, new ...

Long thought to produce only one generation of tree-killing offspring annually, some populations of mountain pine beetles now produce two generations per year, CU biologist Jeffry Mitton (shown here) ...

Last winter's cold temperatures did kill some mountain pine beetles in Alberta, but it wasn't enough to reduce the threat of additional infestations, according to recent field surveys. "These results ...