"Soot particles, formed during fuel combustion inside aircraft engines, are known to dominate the formation of contrail ice ...

The combination of water and soot promotes the formation of unsightly stains. To prevent these efflorescences, you might consider insulating the upper parts of the chimney, for example ...

This reduces the CO2 footprint by up to 95%, and the lower soot formation also has advantages for the formation of contrails and local air quality," says Regina Pouzolz, Director Sustainable Flight at ...

Nitrogen oxides are produced by burning fossil fuels and contribute to ozone formation, acid rain ... The EPA has not updated the nitrogen standard since it was first set in 1971. Soot, also known as ...