ScienceDaily: any urban and suburban areas have high levels of ground-level ozone, an air pollutant that can adversely affect lung and heart health. New research in mice suggests breathing high levels of ozone could also affect women's ability to conceive.
In some areas, ozone can reach high levels in the summer because the bright sunlight and heat combine with compounds from industrial emissions, car exhaust, and gasoline vapors to form the air pollutant. The U.S. Environmental Protection Agency uses the color-coded...