Prisons are where they keep criminals. What has that to do with the environment? The answer is that prisons need to be heated and like industrial boilers or even home heating systems they must burn fuel and in the combustion release potential air pollutants. The U.S. Environmental Protection Agency and the U.S. Department of Justice announced a settlement with the Commonwealth of Pennsylvania’s Department of Corrections and the Department of General Services for alleged Clean Air Act violations at boiler plants generating power, heat and hot water at four correctional facilities. This settlement secures air pollution reductions and additional reporting requirements for correctional facilities in Muncy, Bellefonte, Huntingdon and Somerset, Pennsylvania.