Officials showed reporters surveillance aerial footage of the four suspects moving a large black object in the desert to a table shortly before their arrests.

Claims of a major explosion in the Pacific Northwest turned out to be a pair of earthquakes near one of Washington's most ...

A swarm of at least six earthquakes reaching up to magnitude 2.9 rattled San Ramon near San Francisco, the U.S. Geological ...

Did you feel it? Preliminary magnitude 3.2 earthquake struck near Colma in San Mateo County Friday evening, the U.S.

A magnitude 4.0 earthquake Sunday afternoon three miles from Santa Rosa was followed a few minutes later by magnitude 3.1 and ...

According to the U.S. Geological Survey, about 20,000 earthquakes happen worldwide each year, or roughly 55 per day.

The San Diego County Board of Supervisors Tuesday unanimously approved a proposal to pursue partnerships with national ...

A gas explosion set off a major fire in a San Francisco Bay Area neighborhood on Thursday after obliterating at least one ...

San Diego County Supervisors voted to explore new options for the storage and removal of nuclear waste from the San Onofre ...

At least 7 earthquakes have battered a mountain range in Ventura County on Thursday morning, with preliminary magnitudes measured between 2.5 and 3.3, officials say. According to the U.S.

SAN DIEGO COUNTY, CA - Wednesday night, a 2.0 magnitude quake was detected close to Borrego Springs, according to the U.S.

The San Diego County Board of Supervisors approved a plan Tuesday to explore partnering with national laboratories that are ...