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 ...

Up to two-thirds of the soot above the central Amazon rainforest originates in Africa. Researchers differentiate soot particles using their relative properties and attribute them to their respective ...

From the top of a plane wing, another airplane is seen flying above clouds in a blue sky, leaving a contrail in its wake. In spring 2023, scientists aboard a research aircraft chased an Airbus A321neo ...

GREENSBORO, N.C. — Millions of people are impacted by the wildfire smoke coming from Canada. It's causing air quality alerts for 3/4 of the U.S. Yes, it's hazy, but what makes the wildfire smoke ...

The US Environmental Protection Agency has finalized a key update to the federal air quality standard for fine soot – a step toward reducing deadly air pollution that’s been over a decade in the ...

Dense smoke from Canadian wildfires is drifting across the U.S., canceling flights and sporting events, and threatening severe health problems for millions of Americans. Chicago's air quality now ...