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Can Silicon Valley solve California's mosquito problem? Google is seeking federal approval to unleash millions of bacteria-infected, non-biting mosquitoes in the Golden State.

A biologist discovered a decomposing bighorn sheep tangled in concertina wire recently strung in Imperial County, part of an effort to deter illegal immigration. Advocates had warned of danger to migrating animals.

Residents of Monterey Park voted overwhelmingly to ban data centers, making the San Gabriel Valley city the first in the nation to do so by public vote.

Co-founder of eco-friendly financial firm Aspiration has been sentenced after defrauding investors.

Local governments in a few U.S. towns and cities have banned data centers, but Monterey Park could be the first city to ban them by popular vote.

Tests of a new desalination technology in a reservoir near Westlake Village were a success. Next comes an ocean trial off Southern California.

Nope, it's not AI.

Democratic billionaire Tom Steyer and GOP strategist Steve Hilton are battling for second place in Tuesday's gubernatorial primary after former Biden Cabinet secretary Xavier Becerra surged to the front of the field.

Wildfire resiliency advocates warn that reduced funding could leave California more vulnerable to devastation, and are calling on California leaders to act.

The updated cap-and-invest program determines how aggressively the state will curb planet-warming greenhouse gas emissions and how billions of dollars in revenue will flow.