Have you ever considered what happens to food after you swallow it? Wonder no more, as Seymour Simon turns his considerable science- writing skills to answering that question. A clear explanation follows food from ingestion to elimination, tracking its passage through the esophagus, stomach, small intestine, large intestine, and rectum. Full-page color endoscopic photographs, x-rays, and computer-generated images give visual access to the internal landscape, including bacterial plaque, stomach mucus, and a dissected pancreas. The author offers concise and comprehensible information, while generating a high level of interest (“The inner lining of the small intestine is about 2,700 square feet, . . . almost the size of a basketball court.”) in a perfect book for medical and science buffs, or any kid with the guts to face the graphic details of their inner workings. (Ages 8–12)