The Ghost in the bone-white mask who haunts the Ankh-Morpork Opera House was always considered a benign presence-some would even say lucky-until he started killing people. The sudden rash of bizarre backstage deaths now threatens to mar the operatic debut of country girl Perdita X. (nee Agnes) Nitt, she of the ample body and ampler voice. Perdita's expected to hide in the chorus and sing arias out loud while a more petitely presentable soprano mouths...

Rincewind, the legendarily inept wizard, has returned after falling off the edge of the world. And this time, he's brought the Luggage. But that's not all... Once upon a time, there was an eighth son of an eighth son who was, of course, a wizard. As if that wasn't complicated enough, said wizard then had seven sons. And then he had an eighth son - a wizard squared (that's all the math, really). Who of course, was a source of magic - a sourcerer. ...

In the course of an exciting experiment, the wizards of Discworld have accidentally created a new universe. Within this universe is a planet that they name Roundworld. Roundworld is, of course, Earth, and the universe is our own. As the wizards watch their creation grow, Terry Pratchett and acclaimed science writers Ian Stewart and Jack Cohen use Discworld to examine science from the outside. Interwoven with the Pratchett's original story are entertaining,...

Discworld's only demonology hacker, Eric, is about to make life very difficult for the rest of Ankh-Morpork's denizens. This would-be Faust is very bad--at his work, that is. Eric wants to fulfill three wishes: to live forever, to be master of the universe, and to have a hot babe. Instead of conjuring a demon, Eric brings forth a wizard whose incompetence is matched only by Eric's.

Ever since Roundworld (aka, the earth) sprang up in a magical experiment gone wrong, the wizards of Unseen University have done their best to look after their creation. But the planet seems to have gone down the wrong leg of the Trousers of time. When the Reverend Charles Darwin's Theology of Species popularizes his theory of divine design, Victorian England guilelessly embraces it and the progress of science slows to a crawl. Unless the wizards...

"In The Science of Discworld, the wizards of Unseen University unwittingly created Earth (aka Roundworld) and our universe. At the time, they were so concerned with the rules of this new universe that they overlooked its inhabitants completely. Now, they have finally noticed humanity. And humanity has company: Elves, who want very much to take over human society. In this second installment in the Science of Discworld miniseries, Terry Pratchett and...