The psychology of those who have to cope with extreme conditions has been a matter of much research. It is important, for example to those planning manned space programmes or the makeup of teams who will spend months in an isolated or hostile environment such as Antarctica, to understand the psychological pressures involved, and to recognize those best equipped to handle them. In Extreme, Emma Barrett and Paul Martin explore the challenges that people in extreme environments face, including pain, physical hardship, loneliness, and friction between individuals, and the approaches taken to overcome them. Using many fascinating examples and personal accounts, they argue that we can all benefit from the insights gained.