Ástor Alexander is a figurative illustrator and painter. He specializes in portraits and he’s a big fan of the American illustrators of the 60s. His work can be seen at behance.net/astoralexander

Dr. David P. Barash is professor of psychology emeritus at the University of Washington; his most recent book is Through a Glass Brightly: Using Science to See Our Species as it Really Is, forthcoming from Oxford University Press. With his wife, Judith Eve Lipton, he is currently writing a book about nuclear deterrence.

Dr. Todd M Freeberg is a Professor in the Department of Psychology and the Department of Ecology and Evolutionary Biology at the University of Tennessee, Knoxville. He is a behavioral ecologist who studies social behavior and communication.

Stephen B. Gray is a longtime specialist in science and religion and their relationship. He has a BS from the University of Pennsylvania in engineering and graduate work at Harvard in physics. He is a former designer of computer hardware and software. He has published in engineering, mathematics, and science, and holds several patents. For the past several years he has been writing an encyclopedia called Christianity in Ruins: Refuting the Faith, available at Amazon.