A fault line does not keep a calendar, no matter how often people ask it to. That simple limitation shapes nearly everything scientists say about the San Andreas Fault. Researchers can measure strain, ...

The ground beneath the United States is never truly still. S. could experience potentially damaging earthquakes and intense ...

The West Coast is years overdue for the next big earthquake. When the colossal tremor eventually strikes, seismologists expect high-rises and other buildings to collapse, massive fires that can burn ...