A complex mixture of human and geological factors mean that this stunningly beautiful peninsula of seaside Southern California homes is also, at times, perilous.

What are those blue things washing up on Southern California beaches? Velella velella, of course. Also known as by-the-wind sailors. They're kind of like jellyfish.

Workers have begun dismantling the largest dam on the Klamath River. Indigenous activists are celebrating a milestone in restoring a free-flowing river.

As California pumps water south, an elaborate operation focuses on rescuing fish. Lately, more fish have been arriving, forcing the state to pump less water.

Non-Tesla EV drivers will want to double-check their routes before planning a road trip that relies on the Supercharger network. Not all California locations are open to other makes of EVs yet.

The Biden administration added to the Southern California monument that was established by President Obama in 2014, and also expanded the Berryessa Snow Mountain National Monument in Northern California.

Eighteen California children sued the EPA, saying U.S. climate policy discriminates against minors. A federal judge indicates he is likely to dismiss the suit.

The tech titans backing the controversial project promise a livable, energy-efficient city in close proximity to the Bay Area.

Opposition to storing nuclear waste at Yucca Mountain has united Nevadans across political lines a until now. A Senate candidate has spoken favorably about the idea.

Gov. Gavin Newsom will speak at a climate summit of mayors and governors hosted by Pope Francis at the Vatican in May.

Indigenous Californians want President Biden to establish a national monument in a stretch of desert that is both an ecological wonder and a window into their cultures.

Los Angeles County Supervisor Janice Hahn drafted an opposition response to a proposal to shoot Catalina Island's invasive mule deer population from helicopters.

In California and beyond, responsibly managing and conserving mature forests is far more important to reducing atmospheric levels of carbon.

As climate change intensifies hurricanes, some scientists want a Category 6 for the biggest storms

Gov. Gavin Newsom said Thursday that California continued to rapidly add the battery storage that is critical to the transition to cleaner energy, but admitted it was not enough to avoid blackouts during heat waves.

Despite considerably back-to-back rainy winters in California, new research finds the region has seen much wetter years in the last 3,000 years. Experts worry that variability, coupled with climate change, could leave the state unprepared.

Vector control officials in Southern California are starting to release sterilized male mosquitoes to combat the summertime onslaught of ankle biters.

After identifying remnants of bird flu virus in grocery store milk, federal officials insist the nation's milk supply is safe.

The Port of Oakland is home to the United States' first commercial hydrogen fuel station for big-rig trucks. It's a step on the road to cleaner trucking.

L.A., Orange, Riverside and San Bernardino counties received a failing grade on air quality from the American Lung Assn. Again.

California has increased water allocations to 40% of full allotments from the State Water Project. Officials say environmental regulations have limited pumping.

Southern California steelhead trout have been pushed to the brink of extinction as their river habitats have been altered by development and fragmented by barriers and dams.

A jury sided with a former State Parks employee who said the agency treated him unfairly in part due to his Mexican heritage, awarding him $2.3 million.

State officials unveiled 81 targets to transform millions of acres in the Golden State into landscapes that can absorb more carbon than they release by 2045.

McKinley Elementary has designs to modernize its campus. But plans are being delayed, and costs are rising since dangerous vapors were found in the soil.

Giant sun shades, 40-foot-tall air filters, stratospheric sulfur injections: Here are some of the wild and wondrous ways we might save the planet.

North America's 2021 fire season, including massive Northern California blazes, was made worse by a supercharged heat dome. What did the supercharging? Climate change.

California has released 500,000 salmon into the Klamath River. As dams are removed, the fish will be some of the first to return to a free-flowing river.