Black smoke rises from the chimney on the roof of the Sistine Chapel meaning that cardinals failed to elect a new pope in the second ballot of their secret conclave on March 13, 2013 at the Vatican. The 115 cardinals vote in the Sistine Chapel in a process of finding a successor to Benedict XVI, who brought a troubled eight-year papacy to an abrupt end by resigning last month. AFP PHOTO / TIZIANA FABI