SCIENCE STUFF
'(<a href="http://www.j-archive.com/media/2007-02-16_DJ_07.jpg" target="_blank">Jon of the Clue Crew delivers the clue from the Macy's Parade Warehouse in Hoboken, New Jersey.</a>)  The Macy's Parade balloons are inflated with a mix of air & this gas; they used to be released after the parade but that was stopped for safety reasons'
helium