Ellie Whitney, PhD grew up in New York City and received her B.A. and Ph.D. degrees in English and biology at Radcliffe/Harvard University and Washington Universities, respectively. She has taught at both Florida State University and Florida A&M University, has written newspaper columns on environmental matters for the Tallahassee Democrat, and has authored almost a dozen college textbooks on nutrition, health, and related topics, many of which have been revised multiple times over the years. In addition to teaching and writing, she has spent the past three-plus decades exploring outdoor Florida and studying its ecology. Her latest book is Priceless Florida: The Natural Ecosystems (Pineapple Press, 2004). Kathryn Pinna received her M.S. and Ph.D. in nutrition from the University of California at Berkeley. She has taught nutrition, food science, and human biology courses in the San Francisco Bay Area for over 25 years and has also worked as an outpatient dietitian, Internet consultant, and freelance writer. Her other publications include the textbooks Understanding Normal and Clinical Nutrition and Nutrition for Health and Health Care. She is a registered dietitian and member of the American Society for Nutrition and the Academy of Nutrition and Dietetics. Linda Kelly DeBruyne, MS, RD received her BS in 1980 and her MS in 1982 in nutrition and food science at Florida State University. She is a founding member of Nutrition and Health Associates, an information resource center in Tallahassee, Florida, where her specialty areas are life cycle nutrition and fitness. Her other publications include the textbooks NUTRITION FOR HEALTH AND HEALTH CARE, HEALTH: MAKING LIFE CHOICES, and the multimedia CD-ROM NUTRITION INTERACTIVE. She is a registered dietititan and maintains a professional membership in the Academy of Nutrition and Dietetics.