What is the science behind the smoke signals on the Sistine Chapel to announce if a new pope has been elected?

Nicole, Ashley and Chloe Humphrey are already part of an ACC championship this season. Sunday, they begin a final quest to ...

VATICAN CITY -- The temporary chimney atop the Sistine Chapel released a plume of white smoke on Thursday, signaling that the 133 cardinals working inside had reached a two-thirds majority to elect a ...