This is the definitive collection of the twentieth-century's most characteristic genre--science fiction. The tales are organized chronologically to give readers a sense of how the genre's range, vitality, and literary quality have evolved over time. Each tale offers a unique vision, an altered reality, a universe all its own. Readers can sample H.G. Well's 1903 story "The Land Ironclads" (which predicted the stalemate of trench warfare and the invention...