A magnitude 4.1 earthquake struck off the Northern California coast after midnight on Tuesday, the U.S. Geological Survey said. Several smaller quakes followed.

A third earthquake struck California in less than six hours, this one rocking the city of Hayward near San Francisco and San ...

Two earthquakes rocked California today, one after another, and though they were small, they definitely rattled nerves and ...

The surface of Earth's inner core appears to be dynamic, changing shape as it rotates, earthquake waves reveal.

California was rocked by an earthquake early Friday, marking the fourth to hit the state in over 24 hours. One of the quakes hit just 60 miles from Los Angeles where wildfires are burning.

Researchers studying decades of earthquake data say they have found the first evidence that, in addition to spinning backward ...

The study, published Feb. 10 in the journal Nature, looked at earthquake waves that have ... and a seismologist at the University of Southern California Dornsife. The outer core is molten metal ...

In the end, Mayor Karen Bass will ultimately be judged by one metric: Did she house the people of Los Angeles?

One of the most active volcanoes in the world sits just a few hundred miles off ... and the number of earthquakes really ...