A 4.2 magnitude earthquake struck near Great Falls on Thursday, briefly rattling residents and raising questions about why earthquakes occur in the region.

Did you feel it? An earthquake with a preliminary magnitude of 3.4 struck near San Ramon on Friday morning, the U.S. Geological Survey said.

“You can see a bit at the surface, but you have to figure out what is the configuration underneath,” what the configuration of the faults of Northern California is like, is what causes the most ...

One of the most disturbing earthquake lessons was an earthquake puzzle in Northern California, the 1992 magnitude-7.2 earthquakes in the Cape Mendocino earthquakes, was a depth event at first much ...

The model also proved the theorized existence of the Pioneer fragment, a remnant of the ancient Farrallon plate that used to ...

Every year, thousands of discarded artificial satellites are orbiting the planet, with an increasing number falling back into Earth’s atmosphere. Most of these objects will be destroyed before they ...

By tracking swarms of very small earthquakes, seismologists are getting a new picture of the complex region where the San ...

The sensors used to listen for earthquakes could help protect people from the hazards created by falling spacecraft.

Another earthquake with a magnitude above 4.0 struck along the Riverside–San Bernardino County line overnight. Wednesday’s ...

Over the last few days, the Coachella Valley has experienced more than 20 earthquakes, causing concern among some residents.