Huffington Post: Dozens of environmentally friendly mayors from around the world are meeting at the Vatican this week to bask in the star power of eco-Pope Francis and commit to reducing global warming and helping the urban poor deal with its effects.
It's the latest - and perhaps most important - initiative the Vatican has taken to keep the momentum alive after Francis released his landmark environment encyclical and as governments head into crucial climate negotiations in Paris in December.
Already, the Vatican...