New earthquake restrictions on development are now in effect across a large swath of the northern San Gabriel Valley after the state released final maps for a section of the Sierra Madre fault zone.

Over the last several weeks, earthquakes have rocked parts of the United States from Alaska to Wednesday morning's quake in Tennessee. The most recent quake registered as a magnitude 4.4, just ...

More than 50 new surface earthquake faults have been discovered in California over the last two decades, according to a new state map that officials hope will help guide future development decisions ...