Friar Paolo Benanti wears the plain brown robes of his medieval Franciscan order as he pursues one of the most pressing issues of contemporary times: how to govern artificial intelligence so that it enriches, not exploits, lives. The friar's the go-to-person on AI issues at the Vatican, where Pope Francis has expressed fears about unethical uses of the technology. Benanti also has the ear of top tech executives in Silicon Valley. (Jan. 18) (AP Video/Gianfranco Stara, Andrea Rosa, Trisha Thomas)