What should we look for to find exo-life? What does the history of Earth's geology and biology tell us to look for?
The areas discussed include:
| Supercontinent history | Vaalbara; Ur; Kenorland; Columbia/Rodinia; Pannotia; Gondwana/Pangaea; crustal movements |
| Rodinia | Stability for 1 billion years; 1,800 to 800 million years ago: "The Boring Billion" |
| Break-up of Kenorland and Rodinia | Effect on the oceans, life and the atmosphere |
| Oxygen Levels | 4 stages; The great oxygenation event; reversion to anoxia; the rise to modern levels |
| Biological Effects | Especially the break-ups of Kenorland and Rodinia; Snowball Earths; development of complex life |
| Exo-planets | What sorts of planet might be appropriate; what should we look for |
| Conclusion | Oxygen isn't what it's all about: it's about imbalances in the atmosphere; size and constituent elements of exo-planets |