From The Guardian:

Pope Francis will this week call for changes in lifestyles and energy consumption to avert the “unprecedented destruction of the ecosystem” before the end of this century, according to a leaked draft of a papal encyclical. In a document released by an Italian magazine on Monday, the pontiff will warn that failure to act would have “grave consequences for all of us”.

Francis also called for a new global political authority tasked with “tackling … the reduction of pollution and the development of poor countries and regions”. His appeal echoed that of his predecessor, pope Benedict XVI, who in a 2009 encyclical proposed a kind of super-UN to deal with the world’s economic problems and injustices.

More here.