Bill Hammack is a Professor of Chemical & Biomolecular Engineering at the University of Illinois-Urbana, where he focuses on educating the public about engineering and science. He is the creator and host of the popular YouTube channel engineerguyvideo. His outreach work has been recognized by The National Association of Science Writer's Science in Society Award; the American Chemical Society's Grady-Stack Medal, and the American Institute of Physics' Science Writing Award. His other books include Why Engineers Need to Grow a Long Tail (2011), How Engineers Create the World (2012), Eight Amazing Engineering Stories (2012), and Albert Michelson's Harmonic Analyzer (2014). Don DeCoste is a Specialist in Education in the Department of Chemistry at the University of Illinois-Urbana, where he teaches freshmen and pre-service high school chemistry teachers. He has received the LAS Award for Excellence in Undergraduate Teaching, the Provost's Excellence in Undergraduate Teaching Award, and the School of Chemical Sciences teaching award (four times). He is the co-author of four chemistry textbooks.