In a move sure to upset climate change deniers around the world, Pope Francis plans to issue a papal encyclical this summer that will urge international action to protect the world from global warming.

The papal letter to Catholic bishops urging them to focus on the environment is bound to have a strong impact, being transmitted to 5,000 bishops, 400,000 priests and 1.2 billion Catholic Church members, translated into hundreds of languages and broadcast worldwide, Market Watch notes.