Beggars in Spain, written by Nancy Kress, is a thought-provoking bioengineering science fiction novel that explores the concept of genetic modification and its impact on society. The story is set in a future where genetic engineering allows parents to create 'Sleepless' children who do not need to sleep. The book follows Leisha Camden, a genetically modified 'Sleepless' woman, as she navigates a world divided between the genetically enhanced and the 'Sleepers.' Beggars in Spain raises questions about inequality, human nature, and the pursuit of perfection through bioengineering.