White smoke billowing from the Sistine Chapel today signaled that a conclave of cardinals selected a new pope: Robert Prevost of the United States. He is the first American pope in history and will go ...

Cardinal Robert Prevost, a missionary who spent his career ministering in Peru and leads the Vatican’s powerful office of ...

Conceptual problems, ideology clashes and xenophobia prevented the concept of zero from catching on for a long time. Today ...