Guardian: This summer, life in Australia resembles a compulsory and very unpleasant game of Russian roulette. A pool of hot air more than 1,000 miles wide has formed across the inland. It covers much of the continent, and has proved astonishingly persistent. Periodically, low pressure systems spill the heat towards the coast, where most Australians live. At Christmas it was Perth. Then the heat struck Adelaide, followed by Tasmania, Victoria, and southern New South Wales and Canberra. Over this weekend, it's...