Ballots are burned in the process, but the smoke seen by the world is created using another stove, the Vatican Information ...

Here's everything you need to know about a conclave, the secret, centuries-old process used to select a new pope.

Artificial food colorings were originally manufactured from coal tar; today, most synthetic food dyes are made from petroleum, or crude oil, according to the American Chemical Society (ACS ...

Chemical cartridges are added to ensure there is no confusion over the color. To produce black smoke, a cartridge containing potassium perchlorate, anthracene — the component of coal tar — and ...

VATICAN CITY (AP) — A conclave is the centuries-old election of a pope that derives its name from the Italian “con clave” (with a key) to underscore that cardinals are sequestered until they ...