This piece is being published in collaboration with Public Health Watch and the Investigative Reporting Workshop.
Billionaire industrialist William Koch had a problem in 2010.
The U.S. Environmental Protection Agency was tightening regulations for sulfur dioxide, or SO2, a noxious gas that damages the lungs and contributes to acid rain. And one of Koch’s plants — a 1930s-era facility in Port Arthur, Texas — was releasing enormous amounts of SO2 into a low-income community.
