It is important not only to read good books, but also to write them... Because of the violation of this rule, the wizards of the Invisible University are forced to once again save the unfortunate universe of the Round World. 19th century, England. A man named Charles Darwin writes a book, The Theology of Species, which not only becomes a bestseller, but also stalls scientific progress for more than a century, inevitably causing a new ice age in the coming centuries. Well, how can Archchancellor Ridcully and his colleagues not intervene? The third book in the popular science series, created by Terry Pratchett in collaboration with Ian Stewart and Jack Cohen, tells the reader about the theory of evolution and its impact on the development of all mankind. For the first time in Russian!< /p>