When most of us think of an adventure, it might be a demanding mountain hike or a remote backpacking trek. But for corporate executive and polar explorer Roland Krueger, it is navigating a continent entirely hostile to life. In his most recent expedition, in November last year, Krueger and long-time friend Lars Ebbesen completed a gruelling 275km (171-mile) journey through the remote and spectacular peaks of Queen Maud Land, stretching across East Antarctica. This was no ordinary polar traverse....