Mary Jo DiLonardo has worked in print, online, and broadcast journalism for 25 years and covers nature, health, science, and animals. Young trees sometimes have smooth bark that's unbroken by ridges.

As Colorado experiences its signature whiplash weather, arborists are warning that stressed trees are more vulnerable to pests and diseases. Peel back the bark, and you may find a predator in your ...

DARIEN -- Most people walk past trees and plants every day without paying much attention to the biological diversity surrounding them. "A lot of people walk through, and all they see is a tree," said ...