Federal prosecutors in Sacramento on Thursday unsealed an indictment charging 12 people from around the state with violating the Clean Air Act in what they portrayed as a long-running, sophisticated ...

Add Yahoo as a preferred source to see more of our stories on Google. Smog hangs in the air as the sun sets after a hot day in the Los Angeles Basin on Wednesday, Oct. 4, 2023. (Luis Sinco / Los ...

The U.S. Environmental Protection Agency is proposing to partially halt California’s State Implementation Plan (SIP) relating to emissions controls for non-gasoline-combustion vehicles over 14,000 ...