Southern Louisiana, where the Mississippi River flows between Baton Rouge and New Orleans, is home to over 100 petrochemical plants and much of the nation’s petrochemical industry. The area, dubbed Cancer Alley, also has some of the highest rates of lung cancer and mortality with African Americans disproportionately affected. As part of Living on Earth’s 20th anniversary, we’re looking back to some of the stories we covered in our early years. This week LOE’s Steve Curwood talks with Paul Templet, who was head of the Department of Environmental Quality in Louisiana in the late 1980s and early 90s, about how the state reduced toxic pollution at that time and what the situation is along the lower Mississippi region now.