Scientists Are Trying To Solve The 'Forever Chemicals' Problem

Watch VideoPerfluoroalkyl and polyfluoroalkyl substances, or PFAS, are chemicals that have made a lot of products better: They have been used in firefighting foam, food wrappers, makeup and, maybe most famously, in the original formulation for Teflon used in non-stick pans.

But PFAS might be a little too good at their jobs....