Did you feel it? An earthquake with a preliminary magnitude of 3.4 struck near San Ramon on Friday morning, the U.S. Geological Survey said.

Yosemite National Park is defined by its overwhelming magnitude. Granite cliffs rise thousands of feet into the California sky, and waterfalls thunder with a power that vibrates in your chest. But ...

This illustrated geologic timescale of Earth focuses on the landscapes, flora and fauna of the West, drilling into the region’s deep history.

Plumas-Eureka State Park offers a hidden gem in the Sierra Nevada with Gold Rush history, stunning hikes, alpine lakes, and year-round outdoor adventures.

The Rocky Mountains have always looked like a geological non sequitur, a towering spine of peaks sitting far from the ...

Landslides closed Highway 1 for three years. No one expects this will be the end of its battle with the forces of nature.

How the two primary people of the gold discovery in California failed to cash in.

Bright white rocks spotted by NASA’s Perseverance rover are rewriting what we thought we knew about ancient Mars. These ...

Rockhounders can find all kinds of gemstones across the United States, but there are certain places where geodes can be found ...

Over the last few days, the Coachella Valley has experienced more than 20 earthquakes, causing concern among some residents.

DATES BACK TO 178 YEARS THIS WEEK, WHEN JAMES MARSHALL FOUND FLECKS OF GOLD ALONG THE SOUTH FORK OF THE AMERICAN RIVER.

Focusing on an area off the coast of Crescent City, California, the researchers used autonomous and remotely operated ...