Per- and polyfluoroalkyl substances: https://en.wikipedia.org/wiki/Per-_and_polyfluoroalkyl_substances https://en.wikipedia.org/wiki/Per-_and_polyfluoroalkyl_su

Per- and polyfluoroalkyl substances: https://en.wikipedia.org/wiki/Per-_and_polyfluoroalkyl_substances https://en.wikipedia.org/wiki/Per-_and_polyfluoroalkyl_subst... See also: https://www.epa.gov/pfas/pfas-explained https://www.epa.gov/pfas/pfas-explained and https://www.niehs.nih.gov/health/topics/agents/pfc/index.cfm https://www.niehs.nih.gov/health/topics/agents/pfc/index.cfm tl;dr: Long-lasting, persistent, linked to negative health outcomes, under (increasing?) regulatory scrutiny e.g. https://www.mass.gov/info-details/per-and-polyfluoroalkyl-substances-pfas https://www.mass.gov/info-details/per-and-polyfluoroalkyl-su...