Pope Francis will meet with some of the world’s oil executives next week, likely to give them another moral nudge to clean up their act on global warming. Climate change policy and science experts are cautiously hopeful but aren’t expecting any miracles or even noticeable changes. The conference will be a follow-up to the pope’s encyclical three years ago calling on people to save the planet from climate change and other environmental ills, Vatican spokesman Greg Burke confirmed Friday. Cardinal Peter Turkson, who spearheaded the encyclical, set up the June 8-9 conference with the executives. The pope himself will speak...