A 3.2-magnitude earthquake shook the Northern California area, the U.S. Geological Survey reported. The more than 9-mile deep quake hit a little over half a mile south of Concord at 12:11 p.m. on ...

UC San Diego is preparing to use its outdoor shake table in Scripps Ranch to determine whether 10-story buildings made of ...

Did you feel it? A preliminary magnitude 3.2 earthquake struck in Concord Friday afternoon, according to the U.S. Geological ...