NOx pollution occurs when nitrogen oxides are released as a gas into the atmosphere during the high-temperature combustion of fossil fuels. These nitrogen oxides consist mainly of two molecules ...

“It is important to thoroughly wash your feet with soap and warm water, paying special attention to the areas between the toes and the soles of the feet. If you do not wash your feet regularly, you ...

Helicopters can be as dangerous as they are valuable, in part because of a phenomenon called rotor wash. What is rotor wash, ...

Atomic chlorine (Cl) is a strong atmospheric oxidant that shortens the lifetimes of pollutants and methane in the springtime Arctic, where the molecular halogens Cl2 and BrCl are known Cl precursors.