In the charred landscapes left behind by the Los Angeles wildfires, a persistent sign of life has transfixed locals: trees. On lots where houses have been reduced to piles of rubble and cars to ...

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 ...

Why some U.S. cities are so much greener than others. Ever since I first visited D.C., I was in awe of how full of trees it was. Rock Creek Park, one of the oldest city parks in the United States ...