Guardian: In 2007, a tyro Australian opposition leader called Kevin Rudd held a summit in which he labelled climate change the "great moral challenge of our generation" and, rather optimistically, added "we should be at a stage in this country where climate change is beyond politics". Within months, Rudd swept to power in a landmark election that deposed John Howard, the long-term conservative prime minister and climate-change curmudgeon. Australia, one of the world's leading per capita emitters and the...