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 ...

The center of a tree or shrub stem (from roots to trunk, branches, and twigs) is woody, composed of xylem cells that conduct water from the roots to the upper parts of the tree. That woody section is ...

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 ...

While bark beetles have been slowly infesting trees in Aspen, winter won’t offer any respite. Aspen is currently home to the Douglas-fir beetle, the spruce beetle, the mountain pine beetle, Ips ...