the black smoke comes from coal tar and sulfur, a couple of chemicals in there it is formed when the ballots are combined with ignited chemicals. the chemicals are elect i canly set on fire in a special stove first used in the conclave of 2005. as the vatican goes it is relatively new, bill. it is a new appliance. bill: that is true, martha. when we look at the view above vatican city, you see all the stone and marble here. he want to show you what is important to look at here on the telestrator behind us. here on the top floor, that is the pope s living quarters. and the far two right windows here, that would be his study and bedroom. often times that s where you see the pope on sunday mornings. then the apostolic palace extend to the left. this is the top, the roof of the sistine chapel. more on that in a moment. this is st. peter s basilica, the giant church. home of the vatican.