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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Ever wonder why the sky is blue on a clear day, but red when there are pollutants such as smoke in the air? Wildfire smoke fills ...

For decades, scientists have known that soot particles play a pivotal role in forming contrails. When the atmospheric conditions are right, the hot water vapor in engine exhaust will condense onto the ...

The recent Los Angeles wildfires have left many homeowners—and even nearby neighbors—facing a new kind of hazard: smoke damage. Homeowners should not re-enter their homes until the fire department has ...