Research Priorities for Airborne Particulate Matter

In 1997, the U.S. Environmental Protection Agency (EPA) established regulatory standardsto address health risks posed by inhaling tiny particles from smoke, vehicleexhaust, and other sources. At the same time, Congress and the EPA began a multimilliondollar research effort to better understand the sources of these airborne particles,the levels of exposure to people, and the ways that these particl...