Washington Post: A recent controversy over claims about climate science by Post op-ed columnist George F. Will raises a critical question: Can we ever know, on any contentious or politicized topic, how to recognize the real conclusions of science and how to distinguish them from scientific-sounding spin or misinformation? Congress will soon consider global-warming legislation, and the debate comes as contradictory claims about climate science abound. Partisans of this issue often wield vastly …