CHARLES G. HILL, JR., SC.D, is Professor Emeritus at the University of Wisconsin-Madison with over 200 peer-reviewed publications to his credit. In addition to his academic work, he has served as a consultant to government agencies and private corporations. Dr. Hill's research has been highly interdisciplinary, including experience as a Fulbright Senior Scholar collaborating on studies of enzymatic reactions at the Institute for Catalysis and Petrochemistry (Spain).

THATCHER W. ROOT, PHD, is Professor of Chemical Engineering at the University of Wisconsin-Madison. Dr. Root was awarded an NSF Presidential Young Investigator Award and recently received the Benjamin Smith Reynolds Award for Excellence in Teaching Engineers.