The Science of Discworld III: Darwin's Watch
Book by Ian Stewart, Jack Cohen, and Terry Pratchett
The Science of Discworld III: Darwin's Watch is a book set on the Discworld, by Terry Pratchett, Ian Stewart and Jack Cohen. It is the sequel to The Science of Discworld and The Science of Discworld II: The Globe. Wikipedia
Originally published: 2005
Authors: Jack Cohen, Ian Stewart, and Terry Pratchett
Followed by: The Science of Discworld IV: Judgement Day
Preceded by: The Science of Discworld II: The Globe