Explainer: What are Pope Francis and the Vatican doing to fight climate change?

Before the second-ever Catholic president even set foot in the White House, he gave Pope Francis his word, promising he would work with the leader of the global church to address the crisis of climate change. On the first day in office, President Joseph R. Biden Jr. made good on his promise, signing an executive order for the United States to rejoin the Paris Climate Agreement, renewing a commitment that his predecessor had reneged on.

Pope Francis has devoted much of his papacy to teaching about care for the planet and raising the priority of climate change on the world agenda, and Mr. Biden has consistently affirmed the pope’s vision for climate justice.

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