Aerosols vary in composition, size, concentration, and source. They profoundly affect climate, visibility, human health, and biogeochemical cycling. Particle sizes are determined by the mechanism ...

Unlike most other pollutants, particulate matter (PM) cannot be characterized by the space- and time-variations of the mass concentrations of a single compound. Important factors influencing PM ...

A new USC study involving 8,500 children from across the country reveals that a form of air pollution, largely the product of agricultural emissions, is linked to poor learning and memory performance ...

Health officials are again warning the public to take precautions as Santa Ana winds are expected to spread ash and dust from active fire zones and burn scars in portions of Los Angeles County and the ...