With the passing of Pope Francis at the end of April, and popular films like "The Two Popes" and "Conclave" bringing new perspectives on the Vatican, the process of selecting a new pope is once again a topic of public interest. Pope Francis' successor will be responsible for carrying on a tradition that has shaped the course of history over two millennia. But what happens when a pope dies versus resigns, and how do the Cardinals select a new leader of the Catholic faith? And what can we expect to see from Pope Leo XIV in leading the Catholic Church in the future?