6Chapter 4 – The Drift as Catastrophe
18Chapter 16 – Memory Transmitted Through Ages
7Chapter 5 – Reading the Ruins of Earth
19Chapter 17 – Survivors of the Ash Age
8Chapter 6 – The Visitor from the Deep Sky
20Chapter 18 – Fire and the Birth of Civilization
9Chapter 7 – Comets: Ghosts of Creation
21Chapter 19 – Living in a Dangerous Universe
10Chapter 8 – Cosmic Collisions and Their Consequences
22Chapter 20 – The Human Place in Catastrophe
11Chapter 9 – The Younger Dryas Catastrophe
23Chapter 21 – The Age of Fire and Gravel Reborn
12Chapter 10 – Before the Fire
