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 ...

The current infrastructure also isn’t set up to fully account for the shifting behavior of wildfire smoke, which can travel ...

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

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With 7 of its ambitious rules for cars, trucks and trains repealed, California officials must find new ways to clean up the ...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

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

Louisiana Governor Jeff Landry signed into law late last month a bill defining “green energy” as “… any energy generated by ...

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

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

The report fills a gap in our understanding of aviation's environmental impact by providing the first detailed global mapping ...