It's time for the next Brains On debate! Our listeners sent in over 100 possible matchups and we whittled the list down to ten. You voted and chose this intense matchup from the depths of darkness, under the water and beyond our earth's atmosphere. Who will prevail? This epic episode includes three rounds of heated debate, two mystery sounds, and one winner. Make your own scorecard and then share your opinion with us at brainson.org.