Is there another world in the mirror, Case physicist asks

Like Lewis Carroll’s Alice, who steps through the looking glass into a strange world, Lawrence Krauss, Case Western Reserve University professor of physics, began his search for extra dimensional worlds with the Twilight Zone episode, “Little Lost Girl.” Krauss explores the fascination both scientists and lay people have with the possibility that there that is more out there than meets the eye - in his new book, Hiding in the Mirror: the Mysterious Allure of Extra Dimensions, from Plato to String Theory and Beyond (Viking Press).