Scientists found new evidence that Earth’s crust is peeling underneath the Sierra Nevada in California. The process might be ...

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

While not a household name like the San Andreas, the Elsinore fault is part of a larger seismic zone that experts fear and ...

Millions of people across Southern California learned about a 5.2-magnitude earthquake that hit San Diego County on Monday ...

The earthquake had a preliminary magnitude of 5.2 and was near the mountain town of Julian, east of San Diego, according to ...

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

Southern California typically experiences more than 10,000 earthquakes per year, according to the United States Geological ...

Scientists have found previously undocumented ash deposits buried beneath the Lava Creek Tuff in Wyoming — and at least one ...

RELATED: New Bay Area fire-hazard maps: Is your city among those seeing striking increases? A five-fold expansion of wildfire hazard zones across Southern California raised homeowner concerns that new ...

RELATED: New Bay Area fire-hazard maps: Is your city among those seeing striking increases? A five-fold expansion of wildfire hazard zones across Southern California raised homeowner concerns that ...

GRINDAVIK, Iceland (AP) — A volcano in southwestern Iceland that has erupted repeatedly for more than a year again belched lava and smoke into the air on Tuesday, just hours after authorities ...

(AP Photo/Marco di Marco) GRINDAVIK, Iceland (AP) — A volcano in southwestern Iceland that has erupted repeatedly for more than a year again belched lava and smoke into the air on Tuesday, just hours ...