Special Issue of Aerosol Science and Technology for Particulate Matter: Atmospheric Sciences, Exposure, and the Fourth Colloquium on PM and Human Health.

Highlights the American Association for Aerosol Research conference entitled "Particulate Matter: Atmospheric Sciences, Exposure, and the Fourth Colloquium on PM and Human Health" in April 2003. Goal of the conference; Discussion on aerosol measurement methods and characteristics of urban aerosols; Associations cosponsoring the event.