But there’s a deeper lesson here: In every small town that straddles Highway 99 and in every industrial corridor choking on diesel soot, Californians know that clean air is not some boutique ...

For diesel workhorses, cleaning out the DPF filter regularly helps keep the truck running clean, but a dirty DPF could severely impact performance.

The city of Detroit is the sixth-worst location in the country for year-round particle pollution — soot, the nonprofit American Lung Association's 2025 "State of the Air" report finds.

The fine particulate matter is invisible to the naked eye and can lodge in people’s lungs and cardiovascular systems, leading to heart disease and asthma, among other health problems.

Soot particle filters, in turn, remove the nanometer- to micrometer-sized particles from car exhaust fumes with the help of chemical surface reactions.

Ford has an unwelcome holiday gift for more than 768,000 owners of its diesel cars around the world following news of a new recall. We suspect that Ford—which has been striving to improve ...

The U.S. National Institute of Standards and Technology (NIST) provides a number of particulate matter (PM) standard reference materials (SRM) for use in environmental and toxicological methodology ...

Study: SAF Reduces Aircraft Contrails, Soot Particle Emissions When compared to jet-A-1 fuel, SAF significantly reduces the climate-warming effect of condensation trails, according to the findings.

Lancaster County remains at an “F” ranking for short-term particle pollution, recording 6.7 days per year of unhealthy air based on soot levels.

The new limits mean Harris County’s particle pollution levels will soon violate the federal Clean Air Act unless the area’s soot levels drop precipitously.

To get federal approval, California claims it “needs” this ban to prevent harm to public health from particulate matter—airborne particles like dust, dirt and soot.