The Most Important Scientist You’ve Never Heard Of
www.mentalfloss.com
Clair Patterson—a scientist who helped build the atomic bomb and discovered the true age of the Earth—took on a billion-dollar industry to save humanity from itself.
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The original was posted on /r/todayilearned by /u/Away-Lynx8702 on 2025-02-18 12:20:59+00:00.

Original Title: TIL Robert Kehoe discovered reports that the chemical benzidine caused bladder cancer. His client, DuPont, made benzidine. Instead of alerting the American public, Kehoe stuffed the report in a box. The moldy records were unearthed decades later when DuPont’s employees, stricken with cancer, sued.