The changes Francis brought to the papacy were more than skin deep. He opened the church to the outside world in ways none of his predecessors had done before.

As Pope Francis remains in critical condition fighting a complex respiratory infection and double pneumonia, world and interfaith leaders are offering well wishes and prayers for the recovery of the Argentine pontiff.

Pope Francis, head of the Roman Catholic Church, has held his title for 12 years. What to know about the Jesuit.