Dr. Raymond J. Noonan, Ph.D., specializes in the areas of sex in outer space, the use of surrogates in sex therapy, sex and the future of the Internet, and the issue of sex negativity in U.S. culture. He produces the Web site SexQuest.com and teaches at the Fashion Institute of Technology of the State University of New York.Robert T. Francoeur, Ph.D., is a Fellow of the Society for the Scientific Study of Sexuality and Professor Emeritus of Human Sexuality and Embryology, Fairleigh Dickinson University. He is the author or editor of many books, including a study of Pierre Teihard de Chardin, The Scent of Eros, and (as co-editor), The Continuum Complete International Encyclopedia of Sexuality.