Lisa Randall discusses her new book Knocking on Heaven's Door on C-SPANS BookTV. She talks about science, how scientist think, scale, and more about extra dimensions. I very much enjoyed her book Warped Passages and am looking forward to learning more about extra dimensions and warped spacetime. Also, she even worked with a composer on an the opera Hypermusic Prologue, A Projective Opera In Seven Planes about extra dimensions.