Usa Demonstration News Today

>> reporter: the white smoke. how do te do it? an italian special effects crew gave us a demonstration. seems easy. >> a bit dangerous. >> reporter: a bit dangerous. so i should stand back. >> yes, because its really hot. >> reporter: turns out creating smoke in the vatican is like creating smoke for movies. so, no pope? >> no, wait. >> reporter: not today. >> maybe tomorrow. >> reporter: maybe tomorrow. the conclave used to burn wet straw to make black smoke. today it uses a mix of chemicals. b...