| Introduction--What are the Beginnings of... | xi |
| 1. Human Flight | 1 |
| 2. History | 7 |
| 3. Civilization | 21 |
| 4. Modern Man | 37 |
| 5. Homo Sapiens | 41 |
| 6. Hominids | 55 |
| 7. Primates | 67 |
| 8. Mammals | 75 |
| 9. Animal Flight | 85 |
| 10. Reptiles | 95 |
| 11. Land Life | 111 |
| 12. Chordates | 123 |
| 13. Continents | 133 |
| 14. Earth | 153 |
| 15. Fossils | 163 |
| 16. Multicellular Animals | 169 |
| 17. Eukaryotes | 181 |
| 18. Prokaryotes | 189 |
| 19. Viruses | 195 |
| 20. Ocean and Atmosphere | 201 |
| 21. Life | 217 |
| 22. Moon | 237 |
| 23. Solar System | 243 |
| Index | 273 |