This invaluable primer at last enables all of us to understand these ideas. John Gribbin provides a brief, succinct, accessible overview of the hundred-year saga of particle physics, explaining everything from the basics (how subatomic particles work) to the cutting-edge research that has produced dazzling new models of the universe, among them the radical theories of "superstrings" -- the hypothesis that particles are loops of vibrating "string" -- and "supersymmetry".