This is a concern that some cities along the San Francisco Bay are sinking at an alarming rate, according to a new NASA-led study, examining the shorelines.

California has been rocked by at least nine earthquakes since Thursday, raising fears that the "Big One" could be near.

A third earthquake struck California in less than six hours, this one rocking the city of Hayward near San Francisco and San Jose. Experts are now fearing the worst amid the uptick in seismic events ...