A research group led by Satoshi Ide from the University of Tokyo has demonstrated that classic earthquake generation theory does not hold in areas where the angle at which a tectonic plate dips under ...

Twin earthquakes like those that ripped through the region are unusual but not unheard of. Scientists are already gathering data needed for a more detailed picture. By Robin George Andrews Northern ...

California lies at the boundary between two enormous tectonic plates. These plates don’t rush—think more Sunday stroll than sprint—but their relentless, centimetre-by-centimetre movement builds up ...

LOS ANGELES — It lurks ominously beneath California’s many natural wonders, a reminder that nothing in this landscape is truly permanent. It’s been described as “the mother of all earthquake faults,” ...

Add Yahoo as a preferred source to see more of our stories on Google. A portion of I-880 in Oakland collapsed when the 6.9-magnitude Loma Prieta earthquake struck in October 1989. This photo was taken ...

Rubble fills the sidewalk in front of a street mall in Santa Clara 18 October 1989 in San Franciso after a quake rocked the city 17 October, killing an estimated 63 people and doing USD 1 ...