His research interests traverse a number of areas in ethics, including ethical implications of climate change, the nature of promissory obligation and moral heroism. His teaching interests at Duke Kunshan include global challenges, logic, philosophy and sport.
Fruh has a B.A. in philosophy and Spanish from Amherst College, an M.A. in philosophy from the University of Colorado, Boulder, and a Ph.D. in philosophy from Georgetown University. Before joining Duke Kunshan, he was a visiting assistant professor at Beloit College and a Thinking Matters postdoctoral fellow at Stanford University.