3M paid $10.3 billion in PFAS settlements and quit manufacturing the chemicals entirely. The AI industry just turned PFAS into a growth market again. The physics explains why data centers want these fluids so badly. The carbon-fluorine bond is the strongest single bond in organic chemistry. A liquid built on it won't conduct electricity, won't break down under heat, and can sit in direct contact with a running chip. You can submerge an entire server rack in it. That matters because AI racks…