Miami Herald: Gov. Charlie Crist is cooling to global warming. Under mounting criticism from fellow Republicans, Crist looks ready to cancel his climate-change summit and is backing away from advocating a “cap-and-trade” energy policy. At his well-publicized climate summit last summer, Crist pushed a number of energy plans to encourage renewable energy development and establish a cap-and-trade market that would penalize fossil-fuel use. But Crist’s plans were shredded by the …