Stephen R‎.‎ Turns has been a Professor of Mechanical Engineering at The Pennsylvania State University since completing his Ph‎.‎D‎.‎ at the University of Wisconsin in 1979‎.‎ Before that‎,‎ Steve spent five years in the Engine Research Department of General Motors Research Laboratories in Warren‎,‎ Michigan‎.‎ His active research interests include the study of pollutant formation and control in combustion systems‎,‎ combustion engines‎,‎ combustion instrumentation‎,‎ slurry fuel combustion‎,‎ energy conversion‎,‎ and energy policy‎.‎ He has published numerous refereed journal articles on many of these topics‎.‎ Steve is a member of the ASME and many other professional organizations and has been an ABET Program Evaluator since 1994‎.‎ He is also a dedicated teacher‎,‎ for which he has won numerous awards‎,‎ including the Penn State Teaching and Learning Consortium‎,‎ Hall of Fame Faculty Award‎;‎ Penn State‎'‎s Milton S‎.‎ Eisenhower Award for Distinguished Teaching‎;‎ the Premier Teaching Award‎,‎ Penn State Engineering Society‎;‎ and the Outstanding Teaching Award‎,‎ Penn State Engineering Society‎.‎ Steve‎'‎s talent as a teacher is also reflected in his bestselling advanced undergraduate textbook Introduction to Combustion‎:‎ Concepts and Applications‎,‎ 2nd edition‎.‎ Steve‎'‎s commitment to students and teaching is shown in the innovative approach and design of Thermal‎-Fluid Sciences‎:‎ An Integrated Approach and its companion volume Thermodynamics‎,‎ also published by Cambridge University Press‎.‎ David R‎.‎ Kraige is a Senior Mechanical Engineer at KCF Technologies‎.‎ He graduated from Pennsylvania State University with a Masters in Mechanical Engineering in the Spring of 2007‎.‎