Humans have a remarkable knack for surviving harsh environments. But how do people really endure the world's most remote and inhospitable landscapes, where nature still reigns and where the physical geography is raw and unforgiving? In "Extremes, " renowned geographer and travel writer Nick Middleton puts his body and mind to the test in an attempt to find the answer.His mission is to learn how to cope with four especially horrendous habitats. Through...