Thousands along the West Coast were rattled by multiple strong earthquakes, triggering alerts from emergency officials.

Three huge tectonic plates meet at the Mendocino triple junction off the coast of northern California, and a new study reveals that the underlying geology is significantly more complex than current models show. US researchers have run a new analysis of ...

There's no shortage of stunning cities in California. Take San Ramon, for instance, famed for its majestic green hills, its critical place in the Tri-Valley economic hub, and its wonderfully boastful tagline, "everyone loves it here." Idyllic as it may ...

A powerful 7.8 magnitude earthquake struck the southern Philippines, triggering tsunami alerts across the Pacific. Guam and the Northern Mariana Islands are under an advisory, while Hawaii and the US mainland face no tsunami threat.

Hundreds of millions of people live along coastlines that trace the Pacific Ocean, where the planet’s most active seismic belt produces roughly 90% of all recorded earthquakes. That single statistic,

An earthquake measuring 6.1 magnitude rocked central Florida on Tuesday, just days after the England team arrived there ahead of the World Cup campaign. The quake, measuring 6.1 on the Richter scale, occurred off the west coast of Cuba, sending tremors across Orlando and other parts of Florida.

Scientists have confirmed that a mysterious Utah earthquake first detected in 1979 really did occur nearly 90 kilometers underground—far deeper than anyone thought earthquakes could happen beneath a continent.