Ozone Transport Commission - States working together to reduce ground-level ozone in the northeastern United States. Includes public education materials and technical reports. David J. Williams - Ozone Research - Personal website presents research concerning the meteorological transport of tropospheric (ground-level) ozone and its precursors. HowStuffWorks: How Ozone Pollution Works - Illustrated tutorial examines what ozone is, how it is produced, what health hazards it poses, and what people can do to reduce ozone pollution. St. Louis Regional Clean Air Partnership - An overview of local air pollution; ozone forecasts; real-time images of the arch. North American Research Strategy for Tropospheric Ozone Research Initiative - Fact sheet (1997) about joint governmental effort to understand ground-level ozone. Almanac of Policy Issues: Ozone - Includes information about the effects of ozone on human health and the environment. Ozone Pollution across Europe - Provides a current ozone level map for Europe and information on the effects of the gas on health and the relevant legislation.