After a ballot elects a pope and the results certified, the ballots are burned with chemicals that produce white smoke which can been seen issuing from the chimney of the Sistine Chapel. Usually within an hour or so, the senior cardinal deacon will appear on the central balcony of St. Peter's Basilica and and announce in Latin, "Habemos Papam" (We have a pope). He will then announce the name of the cardinal elected and the name he chooses to be known by.
Nearly every bell in nearly every church in Rome is rung when a new pope is announced.
The new pope is announced from the central balcony of St. Peter's Basilica.
Given that the question was asked in February 2013, the answer is Pope Benedict when he announced he was no longer going to be the Pope.
tomorrow
Pope Francis was elected on March 13, 2013, on the 5th ballot of the conclave.
Pope Urban chose the name upon his election as pope.
Before the election of Pope Francis there was never a pope from any of the Americas.
The ballots are burned after the election and white smoke issues from the chimney of the Sistine Chapel. Soon after an announcement is made from the balcony of St. Peter's Basilica which opens with the words Habemus Papam - we have a pope. His name is . . . . . . then announced and the name he has chosen to reign as.. . . . . . . . .
Pope Urban announced his speech at the council of Clermont in 1095
The results will be announced on 18 may after election......................................
Of course! A new pope would not even be elected unless the sitting pope either dies or resigns.
He chose the name Leo at the time of his election as pope.