| The Lives of a Cell | 1 |
| Thoughts for a Countdown | 5 |
| On Societies as Organisms | 11 |
| A Fear of Pheromones | 17 |
| The Music of This Sphere | 22 |
| An Earnest Proposal | 29 |
| The Technology of Medicine | 35 |
| Vibes | 43 |
| Ceti | 49 |
| The Long Habit | 55 |
| Antaeus in Manhattan | 62 |
| The MBL | 68 |
| Autonomy | 75 |
| Organelles as Organisms | 81 |
| Germs | 88 |
| Your Very Good Health | 95 |
| Social Talk | 102 |
| Information | 107 |
| Death in the Open | 113 |
| Natural Science | 117 |