pt. 1: lecture 1. The nature of science ; lecture 2. The scientific method -- lecture 3. The ordered universe ; lecture 4. Celestial and terrestrial mechanics -- lecture 5. Newton's laws of motion ; lecture 6. Universal gravitation -- lecture 7. The nature of energy ; lecture 8. The first law of thermodynamics -- lecture 9. The second law of thermodynamics ; lecture 10. Entropy -- lecture 11. Magnetism and static electricity ; lecture 12. Electricity.

pt. 2: lecture 13. Electromagnetism ; lecture 14. The electromagnetic spectrum, part I -- lecture 15. The electromagnetic spectrum, part II ; lecture 16. Relativity -- lecture 17. Atoms ; lecture 18. The Bohr atom -- lecture 19. The quantum world ; lecture 20. The periodic table of the elements -- lecture 21. Introduction to chemistry ; lecture 22. The chemistry of carbon -- lecture 23. States of matter and changes of state ; lecture 24. Phase transformation & chemical reactions.

pt. 3: lecture 25. Properties of materials ; lecture 26. Semiconductors and modern microelectronics -- lecture 27. Isotopes and radioactivity ; lecture 28. Nuclear fission and fusion reaction -- lecture 29. Astronomy ; lecture 30. The life cycle of stars -- lecture 31. Edwin Hubble and the discovery of galaxies ; lecture 32. The big bang -- lecture 33. The ultimate structure of matter ; lecture 34. The nebular hypothesis -- lecture 35. The solar system ; lecture 36. The Earth as a planet.

pt. 4: lecture 37. The dynamic earth ; lecture 38. The plate-tectonics revolution -- lecture 39. Earthquakes, volcanoes, & plate motions today ; lecture 40. Earth cycles, water -- lecture 41. The atmospheric cycle ; lecture 42. The rock cycle -- lecture 43. What is life? ; lecture 44. Strategies of life -- lecture 45. Life's molecular building blocks ; lecture 46. Proteins -- lecture 47. Cells, the chemical factories of life ; lecture 48. Gregor Mendel, founder of genetics.

pt. 5: lecture 49. The discovery of DNA ; lecture 50. The genetic code -- lecture 51. Reading the genetic code ; lecture 52. Genetic engineering -- lecture 53. Cancer and other genetic diseases ; lecture 54. The chemical evolution of life -- lecture 55. Biological evolution, a unifying theme of biology ; lecture 56. The fact of evolution, the fossil record -- lecture 57. Charles Darwin and the theory of natural selection ; lecture 58. Ecosystems and the law of unintended consequences -- lecture 59. The ozone hole, acid rain, and the greenhouse effect ; lecture 60. Science, the endless frontier.