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 ...

Are you seeing tiny holes, oozing sap, and thinning crowns on your beautiful weeping willow trees and mighty maples? Don't be too quick to pin it on old age. They could be signs of a much bigger ...

Bark beetle-infested spruce trees begin to dry out already before any visible signs of tree mortality appear, a recent study shows. Bark beetle-infested spruce trees begin to dry out already before ...

The trees' clever tactic to outwit potentially deadly predators was detected by scientists in Germany using satellite data.

According to the Minnesota DNR, Emerald Ash Borer was first discovered in 2009 in Saint Paul. The beetle has now spread to a ...

Round, white hemlock woolly adelgid ovisacs are found on the undersides of branches near the base of the needles. (Michigan Department of Natural Resources) The Michigan Department of Natural ...

GRAND RAPIDS, Mich. (WOOD) — The Michigan Department of Natural Resources says an infestation of balsam woolly adelgid has ...

Bark beetle-infested spruce trees begin to dry out already before any visible signs of tree mortality appear, a recent study from the University of Eastern Finland shows. Led by Dr Samuli Junttila, ...