(July 27, 2023, 4:01 PM EDT) -- CHARLESTON, S.C. — A Native American tribe has sued 3M Co., E.I. du Pont de Nemours & Co. and others in South Carolina federal court contending that they have polluted Lake Superior with per- and polyfluoroalkyl substances (PFAS) from the firefighting agent known as aqueous film forming foam (AFFF), leading to drinking water contamination. The tribe argues further that the defendants knew, or should have known, that PFAS chemicals are “extremely hazardous.”...