More than 150 years after the gold rush first began, some Americans are still digging for riches all over California.

As wildfires burn the landscape, they prime slopes for debris flows: powerful torrents of rock, mud and water that sweep downhill with deadly momentum.

For centuries, maps depicted California as an island—a mystery that puzzled explorers and historians alike. This video dives into the origins of this misconception, from 16th-century maps and ...

Amid renewed calls to boost domestic energy production, including President Donald Trump's famous "drill, baby, drill" ...

USGS researchers have unveiled the first map of prospective locations for hydrogen gas in the contiguous United States — and ...

Figure 4 - Rock-chip samples showing percent copper at Chair Mountain, AZ Property.

A strong earthquake struck southwestern Japan, the U.S. Geological Survey said, prompting authorities to issue a tsunami ...

Jon Keeley, a research ecologist with the U.S. Geological Survey and adjunct professor at UCLA, explained via UCLA’s The ...

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

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

A rare combination of risk factors in Los Angeles County has sparked a series of deadly wildfires that have destroyed ...

Studying the tectonic forces within the Earth give rise to continents, ocean basins, mountain ranges, earthquake belts, and most volcanoes, along with the resulting deformation of geological ...