A UC Davis professor's pleasure hike in the High Sierra turned into a new elevation record for California's highest tree, the ...

Depleted groundwater threatens communities, agriculture, and ecosystems in California's Central Valley, which produces much ...

While not a household name like the San Andreas, the Elsinore fault is part of a larger seismic zone that experts fear and believe more people should know about.

A preliminary 6.0-magnitude earthquake struck near San Diego, according to the U.S. Geological Survey. The quake's epicenter ...