trees

Drought could kill many of the trees in forests around the globe, and particularly in the United States, if global warming isn't contained.

Many trees put on a show in fall, with their leaves turning hues of orange, yellow, red, purple and brown. But these changing colors can also serve as a marker to help identify trees.

Will sequoias still be around as California's climate shifts under the influence of global warming?

A new interactive map shows deforestation in near-real time. Satellite imagery updated monthly shows forest loss and (more rarely) gain.

Trees in California's Sierra Nevada mountains, including giant sequoias, need sunlight, water and just the right kind of granite to grow, a new study finds.