<DIV>According to string theory, we live in a ten-dimensional universe, but only four are accessible to our everyday senses. According to theorists, the remaining six are curled up in bizarre structures known as Calabi-Yau manifolds. In <i>The Shape of Inner Space</i>, Shing-Tung Yau, the man who mathematically proved that these manifolds exist, argues that not only is geometry fundamental to string theory, it is also fundamental to the very nature of our universe. Amazingly, this hidden realm may hold the answers to some of the most profound questions we have about our universe.<p>A fascinating exploration of a world we've only just begun to grasp, <i>The Shape of Inner Space</i> changes the way we consider the universe on both its grandest and smallest scales.</DIV>