A contract photographer for National Geographic magazine and author of The Great Apes (LJ 6/15/94), Nichols is no stranger to the world of animal photography. Every one of the photos in this new volume is of the highest quality, documenting the sweeping changes that have taken place in American zoos (no longer the animal jails of the past) and illustrating six essays by noted zoo officials. William Conway, president and director of the Wildlife Conservation Society, discusses the role zoos play in the conservation of endangered species. Michael Robinson, director of the National Zoo in Washington, D.C., continues Conway's theme, while Edward Maruska, executive director of the Cincinnati Zoo, focuses his efforts on the educational aspects of zoos, noting that zoos are one of the few places where people can come into direct contact with wildlife. Wild and wacky Jack Hanna, director emeritus of the Columbus Zoo and a frequent guest on Good Morning America, stresses the need for zoos to generate public enthusiasm for conservation causes and for zoos to network and work cooperatively with scientists, veterinarians, and animal behaviorists. The message is delivered in clear, understandable terms, and the photography is breathtaking. Highly recommended.Edell Marie Schaefer, Brookfield P.L., Wis.