Radon, a toxic, colorless, odorless, radioactive gas, is the number 2 cause of lung cancer in the U.S. behind tobacco. It enters our homes, offices, hospitals, schools, nursing homes, grocery stores, and other facilities through cracks, holes, and any other openings. The whole state of Iowa is labled by the EPA as Zone 1, meaning Iowa citizens are at Highest Potential for exposure to elevated levels or radon. According to the American Lung Association: "The average indoor radon concentration in Iowa is 8.5 pCi/L. More than SIX TIMES the national average." Action needs to be taken!