Did you feel it? An earthquake with a preliminary magnitude of 3.3 struck near San Ramon on Sunday night, the U.S. Geological Survey said.

CONTRA COSTA COUNTY, CA - A preliminary 2.8 magnitude quake was recorded close to San Ramon on Monday around midnight, the U.S. Geological Survey reported.

CONTRA COSTA COUNTY, CA - A 3.3 magnitude quake was detected near San Ramon Sunday night, according to the U.S. Geological Survey.

Social media videos showed people running into the streets as bright orange flames and smoke spewed into the sky.

One thing that makes the Lassen Peak Trail special is its accessibility within the context of Lassen Volcanic National Park.

Researchers found that beach gains in some Southern California areas could lead to erosion in other coastal regions.

A mud eruption in Sidoarjo in Indonesia, sometimes known as Lusi, took place in 2006 and it continues to erupt, Manga said.

Natural Bridges State Beach in Santa Cruz is exactly that kind of place, and it’s been hiding in plain sight along California ...

California is 500 acres larger than it was 40 years ago, according to a new study released by UC Irvine and United States ...

Scientists at MIT have found compelling chemical evidence that Earth’s earliest animals were likely ancient sea sponges.

California is sinking. Well, not all of it. Some of it is rising. The Long Valley Caldera that Highway 120 skirts the northern edge of when it passes through Mono County east of Yosemite National Park ...

A 3.5-magnitude earthquake struck off the coast of Rancho Palos Verdes late Sunday night, according to the United States Geological Survey. It struck at approximately 9:40 p.m. just over 14 miles off ...