The environmental justice advocate, scientist and native Angeleno became director of Sierra Club California on Tuesday, just as rumors began swirling among environmental groups that President Donald ...

Recent research led by the University of Bristol has made waves by pushing back the timeline of Earth’s earliest life form by ...

The unearthing of a 350 million-year-old tree fossil has opened the door to plants of the past. Five of these fossils were ...

A professor's casual hike in the High Sierra turned into a new elevation record for California's highest tree, the Jeffrey pine, which wasn't formerly known to grow at extreme elevations.

Deciduous trees and shrubs lose their leaves in the fall and can provide color, texture and interest to your yard. Evergreens keep their leaves or needles throughout the year and can act as windbreaks ...