You probably know about this: Pope Francis joined an international chorus urging Donald Trump to meet U.S. commitments on climate change in talks at the Vatican Wednesday. Francis gave the U.S. president a copy of his 2015 encyclical calling for urgent, drastic cuts in fossil-fuel emissions after a half-hour meeting in his private study. Francis’s choice of gift suggests he is adding his voice to those pressing Trump not to renege on the Paris accord, which is the cornerstone of global efforts to limit climate change..... “Thank you, thank you,” Trump told Francis as they shook hands after the meeting.