Pratchett wrote four Science of Discworld books in collaboration with Professor of mathematics Ian Stewart and reproductive biologist Jack Cohen, both of the University of Warwick: The Science of Discworld (1999), The Science of Discworld II: The Globe (2002), The Science of Discworld III: Darwin's Watch (2005), and The Science of Discworld IV: Judgement Day (2013).
Pratchett skrev fire Science of Discworld bøger (eng: "Diskverdenens Videnskab") i samarbejde med Professor i matematik Ian Stewart og formeringsbiolog Jack Cohen, begge fra University of Warwick: The Science of Discworld fra 1999, The Science of Discworld II: The Globe fra 2002, og The Science of Discworld III: Darwin's Watch fra 2005 og The Science of Discworld IV: Judgement Day fra 2013.