Roundworld is in trouble again, and this time it looks fatal. Having created it in the first place, the wizards of Unseen University feel vaguely responsible for its safety. They know the creatures who lived there escaped the impending Big Freeze by inventing the space elevator – they even intervened to rid the planet of a plague of elves, who attempted to divert humanity onto a different time track.
But now it's all gone wrong – Victorian England has stagnated and the pace of progress would embarrass a limping snail. Unless something drastic is done, there won't be time for anyone to invent spaceflight and the human race will be turned into ice-pops. Why, though, did history come adrift? Was it Sir Arthur Nightingale's dismal book about natural selection? Or was it the devastating response by an obscure country vicar called Charles Darwin, whose bestselling "Theology of Species" made it impossible to refute the divine design of living creatures?
Either way, it's no easy task to change history, as the wizards discover to their cost. Can the God of Evolution come to humanity's aid and ensure Darwin writes a very different book? And who stopped him writing it in the first place?
"The hard science is as gripping as the fiction." – The Times
"Entertaining and illuminating." – New Scientist
Details updated August 15, 2021
Sir Terence David John "Terry" Pratchett, OBE (1948–2015) was an English author of fantasy novels, especially comical works. He is best known for his Discworld series of about 40 volumes. Pratchett's first novel, The Carpet People, was published in 1971, and since his first Discworld novel (The Colour of Magic) was published in 1983, he wrote two books a year on average. His 2011 Discworld novel Snuff was at the time of its release the third-fastest-selling hardback adult-audience novel since records began in the UK, selling 55,000 copies in the first three days.
The Science of Discworld :: Series
Series contains 4 primary works and has 4 total works.
Belongs to the series Discworld