( July 16, 2025, 1:48 PM EDT) -- NASHVILLE, Tenn. — Plaintiffs who have cancer have sued the 3M Co., E.I. DuPont de Nemours & Co. and others in a Tennessee court, saying they fraudulently concealed the dangers of per- and polyfluoroalkyl substances (PFAS), which are an active ingredient in the firefighting agent aqueous film forming foam (AFFF), resulting in their injuries....