On July 4th, 2012, one of physics' most exhilarating results was announced: a new particle had been discovered at the Large Hadron Collider. The particle's existence had been speculated on for nearly fifty years: here, finally, was proof. Professor Lisa Randall of Harvard University is one of the world's most influential theoretical physicists, and author of the bestselling Knocking on Heaven's Door and Warped Passages.