The Search for Superstrings, Symmetry, and the Theory of Everything
For most of us chemists, our knowledge of the universe is pretty good from the atomic level upward, but when students ask us (as they sometimes do) about what it is that holds the nucleus together, or what a "string" is, or about quarks, leptons, and any of the other particles that are not electrons, protons, or neutrons, we begin to mumble.