An insect known for turning entire mountainsides the color of rust could be making a resurgence in Colorado. The pest is none ...

If you were to slice into one of those logs, you’d see a lovely blue stain seeping through the yellow wood. It’s a telltale sign of a tree that was killed by mountain pine beetles, and it has ...

“The beetles do make a difference,” says Hans Cornelissen at Vrije Universiteit Amsterdam in the Netherlands. Researchers already knew that, by killing trees, insect infestations in forests ...