Sandra Kahn, DDS, MSD, is a graduate from the University of Mexico and the University of the Pacific. She has twenty-five years of clinical experience in orthodontics and is part of craniofacial anomalies teams at the University of California, San Francisco, and Stanford University.
Paul R. Ehrlich has been a household name since the publication of his 1968 bestseller, The Population Bomb. He is Bing Professor of Population Studies Emeritus and President of the Center for Conservation Biology at Stanford University.
Gregg Rizzo is a New York-based actor in film, theater, video, and television. When not recording, you'll find him about the boroughs of New York City taking photographs.