They survive in America's hottest places without breaking a sweat. How do these little diggers do it? This book reveals the sandy, slow-moving world of desert tortoises, the microhabitats they create, and the behavior patterns and body adaptations that have kept them alive in the desert for more than one million years. Get kids excited about hibernation, estivation (a period of summer hibernation), and turtle conservation with an up-close look at the peaceful desert tortoise.