Blue, jellyfish-like creatures called Velella velella have been washing up along California’s coast recently, captivating Bay Area beachgoers and ringing alarms for climate change scientists.

AI therapy chatbots offer 24/7 mental health support, but what happens when they get it wrong?

A group of Democratic senators is pressing the U.S. Environmental Protection Agency to reverse what they call the illegal termination of 400 congressionally authorized grants.

Potential federal cuts threaten at least $60 million in funding, stalling wildfire prevention efforts and other critical projects across the region. Local leaders warn years of progress could be lost.

Each week, the average person is estimated to ingest up to the weight of a credit card in microplastics. What could I do for my family?

Atmospheric rivers almost guarantee that San Francisco, with its sewage system, will dump millions of gallons of raw sewage into the Pacific Ocean and San Francisco Bay. That’s a big deal for surfers who love the giant waves that the storms create.

No one asks to join the club of extreme weather survivors, but being a member makes you uniquely suited to helping others. The nonprofit Extreme Weather Survivors links veteran survivors with the newest ranks.

Scientists attending a recent snow school at the Sierra Snow Lab join a rich tradition of data gathering that has huge implications for California’s water supply.