The chimney smoke from the Sistine Chapel is the most watched signal during conclave, which started on May 7. Only two colors ...

During a Papal Conclave, the world will be watching for white or black smoke from the Vatican's chimney. Here's what it means ...

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.

For white smoke, a compound of the chemicals potassium chlorate, lactose, and rosin (also known as Greek pitch) is used, ...

As the papal conclave continues, onlookers from around the world will watch for smoke in Vatican City, eager for the first update on who will be the next leader of the Catholic Church. On the ...