Santorini's earthquakes are intensifying as a rare earthquake swarm continues to rattle the Mediterranean's Aegean Sea. The earthquakes are probably caused by faults rather than volcanic activity.

A magnitude 4.5 earthquake has rattled southern Texas in the vicinity of San Antonio, the U.S. Geological Survey (USGS) reported. The quake struck at 9.26 p.m. on Wednesday, at a depth of about 2.3 miles beneath its epicenter on the surface, which lay roughly 12 miles east-northeast of Falls City.