https://www.propublica.org/article/3m-forever-chemicals-pfas-pfos-inside-story
Johnson told me, with seeming pride, that one reason he didn’t do more was that he was a “loyal soldier,” committed to protecting 3M from liability. Some of his assignments had come directly from company lawyers, he added, and he couldn’t discuss them with me. “I didn’t even report it to my boss, or anybody,” he said. “There are some things you take to your grave.” At one point, he also told me that, if he were asked to testify in a PFOS-related lawsuit, he would probably be of little help. “I’m an old man, and so I think they would find that I got extremely forgetful all of a sudden,” he said, and chuckled.
Out the windows of IHOP, I watched a light dusting of snow fall on the parking lot. In Johnson’s telling, a tacit rule prevailed at 3M: Not all questions needed to be asked, or answered. His realization that PFOS was in the general public’s blood “wasn’t something anyone cared to hear,” he said. He wasn’t, for instance, putting his research on posters and expecting a warm reception. Over the years, he tried to convince several executives to stop making PFOS altogether, he told me, but they had good reason not to. “These people were selling fluorochemicals,” he said. He retired as the second-highest-ranked scientist in his division, but he claimed that important business decisions were out of his control. “It wasn’t for me to jump up and start saying, ‘This is bullshit!’” he said, and he was “not really too interested in getting my butt fired.” And so his portion of 3M’s secret stayed in a compartment, both known and not known. [...]
New health effects continue to be discovered. Researchers have found that exposure to PFAS during pregnancy can lead to developmental delays in children. Numerous recent studies have linked the chemicals to diabetes and obesity. This year, a study discovered 13 forever chemicals, including PFOS, in weeks-old fetuses from terminated pregnancies and linked the chemicals to biomarkers associated with liver problems. A team of New York University researchers estimated in 2018 that the costs of just two forever chemicals, PFOA and PFOS — in terms of disease burden, disability and health-care expenses — amounted to as much as $62 billion in a single year. This exceeds the current market value of 3M.