Below California's famed beaches, mountains and metropolitan areas lies a sinister web of earthquake faults—some so infamous ...

In addition to the risk from offshore earthquakes, recent studies show that Seattle and the greater Puget Sound area, with its ... has mounted a campaign to map the faults in detail.

If passed, the screenings would impact owners of two types of buildings in San Francisco, which could need retrofit upgrades to become earthquake safe.

California was hit by multiple earthquakes on Wednesday, just days after a major 5.2 magnitude quake rocked the state.

The Elsinore fault, a major seismic threat in Southern California, could unleash a devastating magnitude 7.8 earthquake. Recent activity highlights its potential danger, urging awareness and ...