What is mechanical engineering? What was YY actually doing? This episode is about the work itself – specifically, the work Yvonne Young Clark did at NASA on the Saturn V rocket, and in designing the “moon rock box” for transporting lunar samples back to Earth. And we take a deep dive into the history of the American space program, the mechanics of a rocket, and how YY brought her troubleshooter’s mind to a problem that was plaguing some of the country’s top scientists.