There are over 4,700 PFAS, and the Canadian and international regulations in place only cover a tiny fraction of the forever chemicals in the market. Amira Aker, Mélanie Lemire, Pascale Ropars and Pierre Avotte write. Aker is a postdoctoral fellow in environmental epidemiology, Lemire and Ayotte are professors in the department of social and preventative medicine and Pascale Ropars is a researcher at Sentinel North; all at Université Laval. Published Friday, July 7, 2023. https://thetyee.ca/Analysis/2023/07/06/Canada-Regulating-Forever-Chemicals/