Did you feel it? A preliminary magnitude 3.5 earthquake struck Concord Sunday morning, according to the U.S. Geological Survey.

Geologists found a deep-running network of magma channels in the northeast corner of Yellowstone National Park.

An earthquake shook Concord on Sunday morning, according to the United States Geological Survey. The USGS said the earthquake ...

A magnitude 6.2 earthquake struck a region in southwestern Mexico early Sunday, according to the United States Geological Survey, causing no serious damage or casualties. It ...

An earthquake with a preliminary magnitude of 3.7 struck in the Concord area on Sunday morning, according to the U.S.

A 3.5 magnitude earthquake struck near Daly City in the San Francisco Bay Area, with no immediate reports of significant ...

Irrigation is a major source of water waste in Snowmass, a critical issue as the town draws entirely from local streams.

A preliminary 3.7 magnitude earthquake struck Friday morning in San Francisco, according to the United States Geological ...

A preliminary 3.7 magnitude earthquake struck Friday morning in San Francisco, according to the United States Geological Survey.

The shaking started with the magnitude 3.6 quake at 7:02 a.m. The USGS said that quake was centered about 3.1 miles northwest ...

An earthquake with a preliminary magnitude of 3.7 shook San Francisco on Friday morning, the U.S. Geological Survey said. The ...

A magnitude 3.7 earthquake struck just off the coast of San Francisco Friday morning, adding a jolt to millions of residents ...