Part I: What is science all about? .- The Ultimate Question.- The Meaning of Understanding.- Truth and Beauty.- G?del, Hawking and the Foundations of Physics.- Part II: Today's Frontiers.- The Incredible Quantum Mechanics.- Special Relativity.- General Relativity.- The Most Accurate Theory in Physics.- The Standard Model of Fundamental Particles.- How the World Began.- Modern Cosmology.- Part III: Open Questions.- Issues...