In December 2007, Pratchett announced that he had been diagnosed with early-onset Alzheimer's disease.

He received the World Fantasy Award for Life Achievement in 2010. In 2001, he won the annual Carnegie Medal for The Amazing Maurice and His Educated Rodents, the first Discworld book marketed for children. He was appointed Officer of the Order of the British Empire (OBE) in 1998 and was knighted for services to literature in the 2009 New Year Honours. With more than 100 million books sold worldwide in 43 languages, Pratchett was the UK's best-selling author of the 1990s. The final Discworld novel, The Shepherd's Crown, was published in August 2015, five months after his death. The first Discworld novel, The Colour of Magic, was published in 1983, after which Pratchett wrote an average of two books a year. Pratchett's first novel, The Carpet People, was published in 1971. He is best known for his Discworld series of 41 novels. Sir Terence David John Pratchett OBE (28 April 1948 – 12 March 2015) was an English humorist, satirist, and author of fantasy novels, especially comical works. Recorded May 2008 from the BBC Radio 4 programme Bookclub

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