Domenico Grasso, John C. Crittenden (in his role as member of the National Academy of Engineering Committee On Grand Challenges and Opportunities In Environmental Engineering For The Twenty-First Century), and numerous coauthors, “Environmental Engineering for the 21st Century:  Addressing Grand Challenges,” National Academies Press, ISBN 978-0-309-47652-2, 2018, 120 pgs., DOI:  10.17226/25121.