Age: DEEP in the daily combat of last year’s federal election campaign, climate change was a potent political weapon Kevin Rudd used against John Howard and his riven government to devastating effect. Now, to use one of Rudd’s favoured metaphors, we’ve reached a fork in the road. Climate change is no longer a convenient rhetorical device used in a political contest to frame the future and decry the alleged failures of the past - it is a profound and challenging problem for a new …