California Earthquake Threat? Scientists Warn Pressure Is Still Building

A new scientific discovery is drawing attention to the immense tectonic pressure building beneath parts of California. Researchers say centuries of accumulated stress along major fault systems could offer new clues about future earthquake risks. While scientists cannot predict exactly when an earthquake will strike, the findings have renewed discussions about preparedness, seismic hazards and the possibility of a major quake along one of America's most closely monitored fault zones.