San Francisco recorded another powerful earthquake Thursday, adding to an already decent history of similarly strong quakes in the area.

Scientists are always eagerly studying it, because it is right on top of the San Andreas fault, and has been called the ...

This sudden jerk creates an earthquake. The San Andreas Fault is undoubtedly the most famous transform boundary in the world. To the west of the fault is the Pacific plate, which is moving northwest.

That two inches -- the average distance the San Andreas fault moves each year -- has the potential to unleash an earthquake of epic proportions directly under the San Francisco and San Jose area ...