Les Johnson, Greg Matloff and C Bangs have collaborated on a new book, "Paradise Regained" (Springer/Praxis Books, 2009), which addresses the question of sustainability on Earth and the future of human civilization.

Les Johnson is a NASA physicist who serves as the Deputy Manager for the Advanced Concepts Office at the NASA George C. Marshall Space Flight Center in Huntsville, Alabama. Dr. Gregory L. Matloff is assistant professor of physics at New York City College of Technology. C Bangs is an artist whose work transcends the traditional gap between art and science.