@pbsnews: Mourners and the faithful gathered at the Vatican to pay their respects to Pope Francis, who died Monday at the age of 88. The body of the late pontiff will lie in state until his funeral Mass on Saturday. After that, the College of Cardinals will meet and cast secret ballots to determine the next leader of the world's 1.4 billion Catholics. Malcolm Brabant reports from Vatican City. #pope #PopeFrancis #News