Under California’s mandate, 35% of new 2026 model cars sold in the state must be zero-emissions, ramping up to 68% in 2030 ...

Produced primarily by the burning of fossil fuels, ammonium nitrate is a substantial portion of particulate pollution, a ...

California Gov. Gavin Newsom and environmental groups condemned a resolution headed to President Donald Trump that, if signed, would block the state’s authority to set stricter air standards and phase ...

California has used federal waivers to help clean up its air quality for decades. The U.S. Senate will likely revoke that ...

The Republican-majority Senate voted to nullify California's landmark environmental rule that would've banned the sale of new ...

After the GOP-led House ignored rules to revoke the Golden State’s authority to implement the nation’s toughest vehicle ...

In its press release, the California Governor’s Office pointed to the decades of precedent upholding California’s waiver, which is protected by the Clean Air Act. It also pointed out that the ...

The Senate voted on Thursday to ax California’s phaseout of gas-powered cars, making a controversial move to sidestep the ...

California officials announced their intentions on Thursday to file their 23rd lawsuit against the Trump administration — this time, over an attempt to upend the state’s stricter-than ...

The Senate on Thursday blocked California's landmark mandate phasing out gas-powered cars, dealing a blow to the state's move ...

The House had voted in April and May to overturn the decisions. Its vote to reverse the Biden administration’s decision to ...

Trucking groups call it common sense. California and clean-air advocates call it unconstitutional. Here's what just happened to California's emissions rules — and what's next.