3M's Decades-Long PFAS Cover-Up: How One Scientist's Blood Tests Exposed a Global Contamination Crisis

3M's Decades-Long PFAS Cover-Up: How One Scientist's Blood Tests Exposed a Global Contamination Crisis

Kris Hansen's blood tests at 3M revealed PFAS in every American sample in the 1990s. Executives downplayed the findings despite decades of prior knowledge. New lawsuits, policy shifts, and a fresh ProPublica podcast expose how the company kept the crisis hidden while the chemicals spread globally. The financial and health toll continues to grow.