Where did frank drake do his work?

Frank Drake conducted his work primarily at the National Radio Astronomy Observatory (NRAO) in Green Bank, West Virginia, where he was involved in radio astronomy and the search for extraterrestrial intelligence (SETI). He also worked at the University of California, Santa Cruz, where he developed the Drake Equation, a framework for estimating the number of active, communicative extraterrestrial civilizations in the Milky Way galaxy. His contributions have had a lasting impact on both astrophysics and the search for life beyond Earth.