A light, 4.9-magnitude earthquake struck in Southern California on Monday, according to the United States Geological Survey.

Yet much about the landscape under the ice has been uncertain, because ground and air surveys are difficult in the region.

How much fresh water is in the United States? It's a tough question, since most of the water is underground, accessible at ...

A new geological map of the Yorkshire Wolds will provide crucial data that could help in protecting water supplies, experts say. Geologists at the British Geological Survey (BGS) have updated ...

(KRON) — An earthquake rattled in Sonoma County Sunday afternoon, according to the United States Geological Survey (USGS). A preliminary 4.2-magnitude earthquake was reported near Glen Ellen at around ...

FILLMORE, Calif. (KABC) -- A 3.6-magnitude earthquake struck in Ventura County Saturday, according to the U.S. Geological Survey. The quake struck around 5:03 p.m. at a depth of nearly 7 miles, with ...

A 7.0 magnitude earthquake struck near Yakutat, Alaska Saturday, the United States Geological Survey (USGS) reported. The quake came during a cluster of seismic activity that saw over a dozen other ...

CEDAR RAPIDS, Iowa (KCRG) - The U.S. Geological Survey plans to start low-level plane flights this month across eastern Iowa. The project is part of a national effort to find mineral resources and ...

USGS released its most detailed national geologic map, offering layered views of geology beneath the Earth’s surface across the lower 48 states. The Cooperative National Geologic Map integrates data ...