When air quality is ranked "unhealthy for vulnerable groups" it means PM 2.5 are at levels that can cause problems for people ...

After months of backlash over alleged pollution concerns, xAI has finally secured an air permit covering some of the methane ...

A new regulation effective June 1 bans governments and their contractors from using small gas-powered equipment during the ...

With 7 of its ambitious rules for cars, trucks and trains repealed, California officials must find new ways to clean up the ...

As the Trump administration eyes rollbacks on industrial emissions limits, a new report claims that paper mills are already ...

A new real-time monitoring system captures minute-by-minute changes in toxic metals resulting from traffic pollution.

Elon Musk’s xAI gas turbines get official approval, even as civil rights groups prepare to sue over alleged Clean Air Act ...

A discussion of the Clean Air Act (CAA), its amendments, and significant caselaw pertaining to clean air regulation in the US ...

This brief assesses the health and air pollution benefits of reducing the global marine fuel sulfur limit from 0.5% to 0.1%, ...

SANTA MARIA, Calif. - Electric lawn mowers and more generated a buzz in Santa Maria on Wednesday. The Air Pollution Control ...

The U.S. has one of the world’s most advanced systems to monitor air pollutants. Can it keep up with a changing climate?

The Shelby County Health Department granted xAI's construction permit for 15 permanent natural gas turbines Wednesday.