International Herald Tribune: In the effort to shape the public’s views on global climate change, hyperbole is an ever-present temptation on all sides of the debate. Earlier this month, former Vice President Al Gore and the Washington Post columnist George Will made strong public statements about global warning — from starkly divergent viewpoints. Gore, addressing a hall filled with scientists in Chicago, showed a slide that illustrated a sharp spike in fires, floods and other calamities around the world …