Earth's Final Frontiers explores the most remote, nearly inaccessible, and still undiscovered reaches of the Earth and beyond. The series takes a detailed look at the freezing poles, ocean depths, sweltering jungles, deepest caves, and the outer limits of space. It also examines the technology that has allowed us to find out more about these mysterious regions, as well as the men and women who have dared to venture out into the unknown. Polar Regions unlocks the mysteries of the Arctic and Antarctic regions. It looks at expeditions to the North and South Poles-from the earliest adventurers to modern tourist cruises-and investigates how people and animals survive on these frozen frontiers. Book jacket.