ROME – Left unchecked, unbridled greed and a thirst for profit leads down a slippery slope that endangers the earth and all who live on it, especially indigenous populations, a Vatican official said.

WARSAW, Poland – Catholic participants and observers criticized a "lack of ambition" by government negotiators at a U.N. conference on climate change that ended Dec. 15 with agreement on a rulebook to implement the 2015 Paris climate accord.