USA Today: A few weeks have gone by now that Pope Francis's encyclical on ecology and climate change was published. The importance lingers. As a Catholic, I admit that I was moved and excited to see that this important message focused exclusively for the first time on the moral urgency of our environmental problems. As a papal document that defines the Church's stance on a subject, the encyclical could have a transformative effect on the climate change conversation. The encyclical and campaign Pope Francis...