A Swiss guard salutes, in St. Peter's Square at the Vatican, Wednesday, March 13, 2013. The Catholic church has chosen a new pope. White smoke is billowing from the chimney of the Sistine Chapel, meaning 115 cardinals in a papal conclave have elected a new leader for the world's 1.2 billion Catholics. (AP Photo/Gregorio Borgia)
Gallery: Photos from St. Peter's Square
White smoke has arisen from the Sistine Chapel chimney in St. Peter's Square, signaling that a new pope will appear on the balcony of St. Peter's Basilica within the hour before many faithful waiting to witness the first new pontiff in eight years.