Ellie Whitney, PH.D., received her B.A. in Biology from Radcliffe College in 1960 and her Ph.D. in Biology from Washington University, St. Louis, in 1970. Formerly on the faculty at Florida State University and a dietitian registered with the American Dietetic Association, she now devotes full time to research, writing, and consulting in nutrition, health, and environmental issues. Her earlier publications include articles in SCIENCE, GENETICS, and other journals. Her textbooks include NUTRITION CONCEPTS AND CONTROVERSIES, TENTH EDITION; UNDERSTANDING NUTRITION, ELEVENTH EDITION; UNDERSTANDING NORMAL AND CLINICAL NUTRITION, SEVENTH EDITION; and NUTRITION AND DIET THERAPY, SEVENTH EDITION, all with Thomson Wadsworth. She also recently co-authored PRICELESS FLORIDA (Pineapple Press), a comprehensive text examining the ecosystems in her home state. Her additional interests include energy conservation, solar energy use, alternatively fueled vehicles, and ecosystem restoration.Sharon Rady Rolfes is the author of 'Study Guide for Whitney/Rolfes' Understanding Nutrition, 11th', published 2007 under ISBN 9780495116707 and ISBN 049511670X.