The Trump administration is hoping a court blocks the Biden-era rule. States say EPA doesn't have the authority to ignore the ...

AG William Tong joined a coalition of 12 attorneys general and local governments suing the EPA over its failure to enforce the 2024 Clean Air Act’s soot standards.

A coalition of environmental groups is suing the Environmental Protection Agency, alleging the agency missed a key deadline ...

California is taking the EPA to court for missing a mandated deadline to crack down on cancer-linked fine particle pollution.

California Attorney General Rob Bonta said the agency has left states without the tools they need to reduce air pollution.

Billions upon billions of soot particles enter Earth's atmosphere each second, totaling about 5.8 million metric tons a year—posing a climate-warming impact previously estimated at almost one-third ...

The American Lung Association's annual State of the Air report gives the Indianapolis metro area failing grades for pollution ...

Oregon and other states are suing the U.S. Environmental Protection Agency, accusing the agency of unlawfully delaying the rollout of a tougher national limit on soot pollution – a delay the states ...

The exhaust from diesel-fueled vehicles, wood fires and coal-driven power stations contains small particles of soot that flow out into the atmosphere. The soot is a scourge for the climate but also ...

NASA scientists say soot, mostly from diesel engines, is causing as much as a quarter of all observed global warming by reducing the ability of snow and ice to reflect sunlight. Their findings on how ...

The longstanding mystery of soot formation, which combustion scientists have been trying to explain for decades, appears to be finally solved, thanks to new research. The longstanding mystery of soot ...

A massive simulation of soot's climate effects finds that basic pollution controls could put a brake on global warming, erasing in a decade most of the last century's temperature change. Compared to ...