California has dozens of earthquakes every day. Most are below 3.0 magnitude, so small that they aren’t felt.

Massive seafloor craters off California are shaped by ancient underwater sediment flows—not methane—revealing a hidden history beneath the waves.

It sounds like the plot of a disaster movie: a mega earthquake so powerful it could sink part of the U.S. West Coast. But ...

A mysterious and highly active undersea volcano off the Pacific Coast could erupt by the end of this year, scientists say.

The San Andreas Fault: a ticking geological time bomb or just another misunderstood landmark? Uncover the history, science, and potential devastation lurking beneath California's surface in this deep ...

A minor, 3.8-magnitude earthquake struck in Southern California on Monday, according to the United States Geological Survey.

Researchers found that a potential powerful earthquake combined with rising sea levels could lead to a mega tsunami.