Associated Press: U.N. Secretary-General Ban Ki-moon will open a key Vatican meeting this month on Pope Francis' highly anticipated teaching document on climate change.
The U.N. chief will join American economist Jeffrey Sachs and the pope's top representative on the environment, Cardinal Peter Turkson, at the April 28 event in Rome. Turkson, head of the Pontifical Council for Justice and Peace, helped write the first draft of the pope's encyclical on global warming and the environment, which is scheduled to be...