| Introduction | 9 |
| Part One: Background | |
| 1 The Tree of Life | 15 |
| 2 The Driving Force | 32 |
| 3 The Human Legacy | 44 |
| Part Two: The Common Ancestor | |
| 4 The Missing Link | 63 |
| 5 The Molecular Link | 78 |
| Part Three: The Family Tree | |
| 6 The Leakey Bush | 95 |
| 7 The Oldest Hominid? | 113 |
| Part Four: The Way We Are | |
| 8 Upright and Quite Bright | 131 |
| Notes and Sources Used | 147 |
| Recommended Reading | 149 |
| Index | 153 |