To produce the dramatic black smoke during the 2013 conclave, technicians burned a mixture of potassium perchlorate, anthracene, and sulfur.

Justin Bieber’s latest Instagram post is making waves, thanks to an unexpected collaboration and a bold visual twist that has everyone talking.

Here's what black and white smoke from the Vatican chimney means when Catholic cardinals are voting on a new pope.

No pope is chosen after first day of Vatican conclave Over the coming days, eyes will search for the billowing white smoke that signals Habemus Papam: “We have a pope.” ...

Here's what black and white smoke from the Vatican chimney means when Catholic cardinals are voting on a new pope.

Here's what black and white smoke from the Vatican chimney means when Catholic cardinals are voting on a new pope.

Here's what black and white smoke from the Vatican chimney means when Catholic cardinals are voting on a new pope.

Here's what black and white smoke from the Vatican chimney means when Catholic cardinals are voting on a new pope.

Here's what black and white smoke from the Vatican chimney means when Catholic cardinals are voting on a new pope.