Editing Terry Pratchett (section)

=== ''Discworld'' ===
{{Main|Discworld}}
The ''Discworld'' series consists of 41 novels and a variety of supporting material.  Pratchett began writing the ''Discworld'' series in order to "have fun with some of the cliches".<ref name="sfw" /> The Discworld is a large disc resting on the backs of four giant elephants, all supported by the giant turtle [[Great atuin|Great A'Tuin]] as it swims its way through space. The books were published essentially in chronological order,<ref name="words from master" /> and advancements can be seen in the development of the Discworld civilisations, such as the creation of paper money in Ankh-Morpork.<ref name="indiebound" />

====''The Science of Discworld''====
Pratchett wrote four ''Science of Discworld'' books in collaboration with professor of mathematics [[Ian Stewart (mathematician)|Ian Stewart]] and reproductive biologist [[Jack Cohen (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).

All four books have chapters that alternate between fiction and non-fiction: the fictional chapters are set within the [[Discworld (world)|Discworld universe]], where [[Discworld characters|characters]] observe, and experiment on, a universe with the same physics as ours. The non-fiction chapters (written by Stewart and Cohen) explain the science behind the fictional events.

In 1999, Pratchett appointed both Cohen and Stewart as "Honorary Wizards of the Unseen University" at the same ceremony at which the [[University of Warwick]] awarded him an honorary degree.<ref name="warwick" />

====''Folklore of Discworld''====
Pratchett collaborated with the folklorist Dr [[Jacqueline Simpson]] on ''[[The Folklore of Discworld]]'' (2008), a study of the relationship between many of the persons, places and events described in the ''Discworld'' books and their counterparts in myths, legends, fairy tales and folk customs on Earth.