Environment

State fish and game officials declared mountain lions in the Central Coast and Southern California threatened under the state’s endangered species act.

Trump rescinded the legal foundation for U.S. climate policy. California is preparing to sue — and may try to write its own rules.

Even after legalization, illicit cannabis grows continue to pollute California’s public lands. And the contamination, new research shows, lingers.

EPA Administrator Lee Zeldin met with local and congressional leaders in San Diego on Thursday to tout the U.S. and Mexico's progress in cleaning up the polluted Tijuana River.

California is updating CalEnviroScreen, the influential pollution tracker that helps determine which communities get environmental grants. Advocates say the state should improve the tool and use it more frequently to cut pollution.

New budget language lays out how Gov. Gavin Newsom plans to structure a $200 million electric vehicle rebate program, including price caps, automaker matching funds and a focus on first-time buyers.

A top California water official offers an inside look as the Trump administration referees a Colorado River stalemate.

San Diego is suing the federal government for allegedly trespassing on city land near the Mexican border to build razor wire fencing that the city says illegally damaged protected habitat and endangered species areas without notice or approval.

A 2015 law required the state Department of Toxic Substances Control to overhaul its permitting process to consider how multiple sources of pollution impacts health. Advocates now say the overdue rules aren’t protective enough.

California Gov. Gavin Newsom’s $200 million proposal to revive the state’s EV market would reach only a fraction of buyers, raising fresh questions about who should benefit and whether limited incentives can meaningfully move a slowing market.