The North Pole and the South Pole are desolate regions with some of the most unforgiving weather on Earthpolar weather. The North Pole is surrounded by the Arctic ice cap, a huge, frozen ocean 5.5 million miles square, the largest expanse of sea ice on Earth. The South Pole, or Antarctica, is also a land embedded in ice, where temperatures can plunge to minus 128 degrees Fahrenheit. Combined, the polar ice sheets of the Arctic and Antarctic cover one-seven of the Earths surface. Learn about the killer environments at both of the poles, where an unprotected diver would die within minutes. Follow the journey of a cargo ship and its escort icebreaker through 400 miles of frozen oceanand the ingenious method used to free the ship when it becomes stuck in heavy ice. Learn more about the "ends of the Earth," our last remaining regions of true, unspoiled wilderness.