A petition challenges the California Air Resources Board's inclusion of dairy-manure biomethane as potentially eligible for credits under the agency’s LCFS.

Nevada's Clean Cars regulations will take effect in 2025, but the state is allowing auto makers to bank ZEV credits starting next year.

A plan that will serve as a roadmap for California to reach its decarbonization goal may be delayed as a committee asks for more time to finish its work.

Car manufacturers selling in states that follow California’s ZEV regulations would be able to transfer ZEV credits among states under a new CARB proposal.

Gov. Gavin Newsom stood in the smoke of Sequoia National Park on Thursday to discuss the $15 billion California is spending on climate resilience.

Oregon should move swiftly to adopt California’s stringent emissions rules for trucks, testifiers at a public hearing hosted by the state’s Department of Environmental Quality said.

California air quality regulators are devising a program to lower increased emissions that may occur as the state tries to meet energy demand during severe weather.

Bills sent to Gov. Gavin Newsom include measures on offshore wind planning and controlling GHG emissions from cement manufacturing.

Development of hydrogen-fueling stations in California is accelerating; car manufacturers should consider ramping up production of FCEVs, new report says.

The California Air Resources Board has begun design of a program that will distribute up to $10 million in incentives for the purchase of electric bikes.