Navarrosa, who is currently writing his thesis on the pope’s 2016 encyclical 'Amoris Laetitia,' recalls meeting Francis in 2021 and says he had hoped to meet him again. “I’m not worried about the future of the church, because it is guided by the Holy Spirit,” he says.

Pope Francis was quick to grasp the risks posed by climate change. But his tenure showed humanity’s limits in confronting the peril.