Associated Press: Mayors from around the world declared Tuesday that climate change is real, man-made and must be stopped as a matter of moral imperative, gathering at the Vatican to announce new measures to fight global warming and bask in Pope Francis' ecological star power. The Vatican invited the 60 mayors to a two-day conference to keep up pressure on world leaders ahead of U.N. climate negotiations in Paris later this year. The meeting also aimed to promote Francis' environment encyclical, which denounced what...