School Library Journal: Gr 5?8?The mystery of the vanishing honeybees began in the winter of 2006 when beekeeper Dave Hackenberg inspected 400 of his 3000 hives in Florida and discovered that 20 million bees had simply disappeared. He frantically alerted state bee inspectors and other beekeepers that there was some strange new ailment affecting these insects and asked for help in finding the cause. Soon beekeepers across the country were reporting similar catastrophes. Most of this lucid, fact-filled introduction focuses on the investigation into the problem, now known as "colony collapse disorder," or CCD. Separate chapters cover each of four scientists' line of research and describe their procedures, key tools, equipment, and findings. While no definitive cause for CCD has yet been found, the researchers theorize that the disorder is caused by a combination of the usual bee ailments, the chemicals used to treat them, and a new systemic pesticide employed by farmers. Other chapters include interviews with a hobbyist beekeeper and Hackenberg; they are packed with information on beekeeping and stress the importance of bees as pollinators. Special feature pages profile the scientists and describe the physical and behavioral characteristics of honeybees; hive construction; the making of honey, etc. Clear color photographs of beekeepers, scientists, equipment, close-ups of bees, hives, etc., complement the text on every page. Youngsters concerned with the environment will find this meticulously researched title a valuable resource.?Karey Wehner, formerly at San Francisco Public Library.