A swarm of a half-dozen earthquakes reaching up to magnitude 2.9 rattled San Ramon in California near San Francisco, the U.S.

Tremors beneath Northern California show hidden plate movement, helping scientists better understand where future big ...

SAN RAMON, CA — A series of earthquakes shook parts of Northern California again on Sunday and Monday, according to the United States Geological Survey. First, a 4.7 magnitude earthquake rattled at ...