The changes come after public utilities warned that zero-emission purchasing rules could disrupt emergency response efforts.

The Environmental Protection Agency has sent to Congress for review several vehicle emission-related waivers that the agency granted to California under the Biden administration. It’s being billed as ...

SACRAMENTO, California — California regulators on Tuesday proposed tightening their methane emissions standards for landfills ...

California’s Assembly Appropriations Committee killed “Leno’s Law” that aimed to give classic car owners like him a pass from smog requirements.