Sinking levels of an air pollutant may trigger an increase in another potentially harmful class of chemical compounds — ScienceDaily

An imbalance between the trends in two common air pollutants is unexpectedly triggering the creation of a class of airborne organic compounds not usually found in the atmosphere over urban areas of North America, according to a new study from Caltech. For decades, efforts to reduce air pollution have led to cleaner air in U.S […]