Urban trees often stand at the center of plans to fight rising city temperatures. Their cooling power seems simple and effective. But new research shows that the truth is more complex. Trees do cool ...

Bald Cypress swamp at Atchafalaya basin in Louisiana. When is a tree not a tree? We often think of urban trees as simply poles in the ground, islands unto themselves, but they are ecosystems all their ...

If you treat them right, trees can shade your house, beautify your property, and even save you money on energy. But diseases, pests, or extreme weather can impact the sturdiest oaks. And even healthy ...

An ice storm hailed as one of the worst seen in the Willamette Valley caused power outages, road closures, elicited a county- and state-wide declaration of a state of emergency and downed tens of ...