Ohio State’s faculty includes a Nobel Prize-winning physicist, Kenneth G. Wilson. It has twenty-one members of the United States National Academy of Sciences or National Academy of Engineering, plus four members of the Institute of Medicine. There are also 159 elected fellows of the American Association for the Advancement of Science who are teaching at Ohio State. In the last 25 years, thirty-two Ohio State faculty members have been given the Guggenheim Fellowship, which is more than all other public and private Ohio universities combined.