Themis Matsoukas has taught graduate and undergraduate thermodynamics, materials and energy balances, and various electives at Penn State–home to one of the world’s largest undergraduate programs in engineering–since 1991. He has taught thermodynamics more than twenty times, to more than a thousand undergraduate students. His honors at Penn State include the George W. Atherton Award for Excellence in Teaching (2009); the Outstanding Teaching Award, Penn State Engineering Society (2006); and the AXE: Outstanding Teacher Award (2005).