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.
Sign up for the
from Steve Spangler Science