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

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

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

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

With 7 of its ambitious rules for cars, trucks and trains repealed, California officials must find new ways to clean up the ...

The most effective filters have what’s called high-efficiency particulate air certification. Better known as HEPA filters, ...

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

U.S. power sector emissions are already at their highest levels in three years, but will likely climb further during the peak ...

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

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

Colorado’s utility companies have been planning for nearly two decades to shutter their coal-burning power plants and transition to cleaner alternatives.

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