Understanding the earthquake history of a region is key to estimating seismic hazard. To help with this task, geologists look ...

After an earthquake shook Southern California this week, Ian Schwartz looks at Arizona's seismic history. And it includes one devastating quake.

A video from the San Diego Zoo Safari Park taken during an earthquake put complex elephant herd dynamics on display.

Understanding the earthquake history of a region is key to estimating seismic hazard. To help with this task, Geologists look for clues about prehistoric earthquakes at the bottom of lakes in the ...

The temblor was detected near Julian, California. There were no immediate reports of major damage or injuries.