Jeremy Van Antwerp earned an M.S. and Ph.D. in chemical engineering from the University of Illinois at Urbana Champaign. He is a Professor of Engineering (chemical concentration) at Calvin University in Grand Rapids, MI, USA, and has been a research affiliate and visiting scholar at the Massachusetts Institute of Technology, a journal editor, and a consultant in the pharmaceutical industry. His research area is systems and process control. He holds one U.S. patent and is the author of Identification and Control of Sheet and Film Pro cesses [1]. His poetry, cartoons, and puzzles have appeared in IEEE Control Systems. He is passionate about excellence and high-impact practices in education. In 2001 he was awarded a Michigan Traditional Arts apprenticeship grant.
Matthew Kuperus Heun is a Professor of Engineering (me chanical concentration) at Calvin University in Grand Rapids, MI, USA. He earned an M.S. and Ph.D. in mechanical engineering from the University of Illinois at Urbana-Champaign and later worked at NASA's Jet Propulsion Laboratory and at Global Aerospace Corporation. He has been a visiting scholar at the Centre for Renewable and Sustainable Energy Studies at the University of Stellenbosch, South Africa. His long-term research question is "What is the relationship between energy and the economy when viewed through the lens of sustainability?" In addition to scores of articles, he is the lead author of Beyond GDP: National Accounting in the Age of Resource Depletion and a co-editor of Beyond Stewardship: New Approaches to Creation Care.