EPA Sets Stronger National Air Quality Standard for Sulfur Dioxide First new SO2 standard in 40 years will improve air quality for millions
"The U.S. Environmental Protection Agency (EPA) is issuing a final new health standard for sulfur dioxide (SO2). This one-hour health standard will protect millions of Americans from short-term exposure to SO2, which is primarily emitted from power plants and other industrial facilities. Exposure to SO2 can aggravate asthma and cause other respiratory difficulties. People with asthma, children, and the elderly are especially vulnerable to the effects of SO2..."