A new study uncovered hidden activity on California's fault lines.
A strong, 6.4-magnitude earthquake struck in the Philippine Sea on Wednesday, according to the United States Geological Survey. The temblor happened at 11:02 a.m. Philippine time about 17 miles east ...
The US Geological Survey recorded the first quake near Holtville at 1:40am PT on Wednesday, with the most recent detected on Thursday morning. Hundreds of California residents have issued reports of ...