You and I enjoy cleaner air thanks to air pollution standards based on science. But now that could change. Last week, science advisors to the US Environmental Protection Agency (EPA) drafted a letter criticizing the agency’s use of science to set ambient air pollutant standards. This is the latest development in the EPA’s process to update the health protective standards for particulate matter and ozone—the two air pollutants most responsible for early death and sickness in this country. Read more >