Two masterworks of science fiction at one low price, from award-winning authors Larry Niven and Edward M. Lerner Ringworld's Children The Ringworld is a landmark engineering achievement, a flat band three million times the surface area of Earth, encircling a distant star. Home to trillions of inhabitants, not all of whom are human, and host to amazing technological wonders, the Ringworld is unique in all of the universe. Explorer Louis Wu, an Earth-born...