Frances Kelsey, and FDA official, saved the US from a generation of children with birth defects such as flipper-like arms and feet by repeatedly blocking the authorization of a drug, already approved in Europe, known as Thalidomide. – WTF Fun Facts

Source: https://www.npr.org/sections/thetwo-way/2015/08/08/430709628/frances-kelsey-fda-officer-who-blocked-thalidomide-dies-at-101