This week's episode is a special live taping of the Paramount Science Summit, in which Cara moderates a panel of luminaries in theoretical physics: Dr. Michio Kaku (The Future of the Mind), Dr. Brian Greene, (The Hidden Reality), and Dr. Jim Gates. They discuss the role string theory may one day play in elucidating a theory of everything, along with other cosmic quandaries, like black holes, the multiverse, the big bang, and more.