From the Book - First edition.
Earth : a very brief history
Mass extinctions : the first four of five
Mass extinctions, continued : the fifth one got the dinosaurs
Homo sapiens : not the only humans
DNA bottleneck : that time humans almost went extinct
Asteroids : incominggggg!
Supervolcanoes : the blast from below
Disease : teeny tiny threats like bacteria and virus
Over population : we live here, we eat here; until we don't
War : the ultimate self-destruct button
Sun : we're gonna need stronger SPF
Outer space : aliens, supernovas, gamma-ray bursts
Global warming : who turned up the heat?
5-2° celsius : just a wee bit warmer
We're doomed (JK, how to save the planet people).
