Leading theoretical physicist Lisa Randall joins Larry Mantle to talk about the theoretical underpinnings of string and super-symmetry theory, purported to explain all the forces in the subatomic and the cosmic universes. In her new book Warped Passages, Randall uses creative analogies to tackle the incredibly complex concept of additional spatial dimensions along with other hard to grasp ideas including parallel universes, warped geometry, and three dimensional sink-holes. Randall takes us to the incredible world of hidden dimensions that underlie the universe we live in, and describes how we might prove their existence, how string theory may be tested and what questions regarding the theory remain unanswered.