Steve amazed Ellen with an incredible eruption of foam that looks like a giant stream of toothpaste... or elephant toothpaste. Steve also taught Ellen another classic science demonstration that shows what happens to sound when it travels through a gas that is six times heavier than air. Ellen was surprised when her voice was low and her vocal cords felt funny after taking a breath of the anti-helium SF6. He and Ellen finished the segment by blowing giant smoke rings at the audience and knocking cups off of audience members' heads.
