EPA is tightening a key air pollution standard for the first time in more than a decade, overturning a Trump-era decision to leave soot regulations unchanged. Direct and indirect sources of airborne ...

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 ...

In a move that could give EPA grounds for delaying compliance decisions, the group cites faulty air monitoring data in its petition.

Soot is one of mankind's oldest pollutants. Cavemen blackened their walls with it. During the Industrial Revolution, soot so thoroughly coated the English countryside that white moths died out and ...

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 ...

Q: We have a modified two-story home. The carpet in the upstairs bedrooms has a dark 1-inch stain on the edge above our garage. Our carpet is 18 years old, and we will probably replace it in the next ...