About 55 earthquakes a day – 20,000 a year – are recorded by the National Earthquake Information Center. A quick guide to how they are measured.

Discover interesting facts about how big earthquakes can get, why earthquakes happen, and why they're so hard to predict.

About 55 earthquakes a day – 20,000 a year – are recorded by the National Earthquake Information Center. A quick guide to how they are measured.

Near-shore tsunamis, those triggered by earthquakes just off the coast, could pose a particularly dire risk for California’s heavily populated coastal communities.

Early Friday, a major 7.7 magnitude earthquake that originated near Mandalay, Myanmar, shook the Earth as far as Bangkok, about 800 miles away.

The earthquake magnitude communicates its energy level, and the intensity communicates its strength based on its effects.

About 80% of all known tsunamis are triggered by earthquakes. These seismic events move Earth's surface, displacing the water above and generating waves that rapidly travel in all directions ...

A 5.2-magnitude earthquake struck near Bakersfield on Tuesday night, rattling parts of the Central Valley and Southern California including Kern, Los Angeles and Ventura counties.

It has been a generation since Los Angeles had a major earthquake disaster. Even in an active seismic year, many residents say they refuse to become alarmist.

With the unpredictable and destructive nature of earthquakes, a few extra seconds of notice can make all the difference in the world.