Watch Dark Waters if you haven't, which tells the story of a lawyer who broke the case against Dupont producing forever chemicals in huge quantities long after the evidence was overwhelming they cause cancer, birth defects, endocrine disruption, and more.
Also read the Intercept series, The Teflon Toxin: DuPont and the Chemistry of Deception: https://theintercept.com/2015/08/11/dupont-chemistry-decepti....
Other important pieces out there.
When the Senate questioned General Austin, today named Secretary of Defense, they asked him about forever chemicals because they've contaminated military bases so much.