What covers 50 percent of Fairfax County and grows? Trees! Or more correctly, the tree canopy, which is made up of branches and leaves that seem to cover the ground when viewed from above. Fairfax ...

BUCHANAN — People don’t usually think about trees when it comes to having a healthy, vibrant community but they should.

Richard Seidman remembers one of the very first trees he planted in Portland in 1989 for Friends of Trees, then his fledgling nonprofit launched to combat climate change. He wanted to take a photo, ...

While trees can cool some cities significantly during the day, new research shows that tree canopies can also trap heat and raise temperatures at night. The study aims to help urban planners choose ...

Lots of reasons spur the planting of new trees, including shade, beauty, bird and pollinator benefits, and trees’ ability to produce oxygen while storing carbon to counteract harmful climate change.

From microbes to four-legged critters, dead trees play an essential role in a forest’s ecosystem. Experts say it's rare that removal is necessary. Letting dead trees, like this bristlecone pine in the ...