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The Trump administration has formally proposed rescinding the 2001 Roadless Rule, clearing the way for roads and logging across more than 44 million acres of protected national forest, including in California.

The Trump administration's plan for the water-starved Colorado River is drawing criticism. Arizona warns it could sue.

California is now the only state in the country to require low-resistance tires on cars.

Big, green and notoriously bad at flying, figeater beetles are taking over Los Angeles this month. Here's why the clumsy insects are thriving.

The material exposed at the Wedge surf spot in Newport Beach by powerful swells is believed to be part of an old jetty that was constructed decades ago.

Green hydrogen has gone bust in California, with project cancellations, ongoing fuel disruptions and station build-outs at a standstill.

Diablo Canyon doesn't look like a nuclear power plant that's getting ready to retire.

Dairy farmers grazing cows in Point Reyes were paid to leave, but now they want back in. They claim the park needs grazing to keep a lid on invasive species. The Trump administration is sympathetic.

It feels like vector-borne diseases are popping up everywhere these days. Has something changed?

A young river otter hit by a car in Vacaville suffered brain swelling, but rescuers expect a full recovery and release into the wild within days.