Although the San Andreas Fault is the longest and one of the most active fault zones in California, it is not responsible for every earthquake in the state. This video segment describes the geologic setting of the San...

This set of lists and maps provides information on the latest earthquakes for the 50 states and Puerto Rico. The lists are organized by date and time, and by magnitude. On the interactive maps, symbols are coded by size...

To say that there are a few earthquake research centers in Southern California is a bit like saying that Chicago sits on a lake of some size. It's a bit of an obvious remark, but given that there are a number of such...