Here's how the conclave creates black and white smoke and why the Catholic Church began using them to signal whether a new pope has been elected.

While cardinals this week said they expected a short conclave, it will likely take at least a few rounds of voting.

Cardinals set for more talks after black smoke signals no pope chosen on first day - The smoke signals that the 133 cardinals ...

After failing to find a winner on the first ballot, the Cardinals retired for the night and will return to the Sistine Chapel ...

Black smoke poured from the chimney of the Sistine Chapel on Wednesday, signifying that the cardinals did not elect a new ...

Black smoke rose out of the Sistine Chapel chimney, signaling that the first vote of the conclave failed to reach the two-thirds majority.

A group of 133 Cardinals are making their way from their rooms into the Sistine Chapel where they will have no contact with ...

VATICAN CITY (AP) — Black smoke poured out of the Sistine Chapel chimney on Wednesday, signalling that no pope had been elected as 133 cardinals opened the secretive, centuries-old ritual to choose a ...

Black smoke is pouring out of the Sistine Chapel chimney, indicating no pope was elected on the first ballot of the conclave ...

A conclave will go on for as long as needed. The longest was almost three years from 1268 to 1271. Some have been a day. The ...

Cardinals have no contact with the outside world after the master of liturgical ceremonies utters the words “Extra Omnes” the ...

The conclave to elect a new pope has officially begun, with a Vatican official calling out “extra omnes” and the doors to the ...