books.google.com - Welcome to a world like no other.The Ringworld: a landmark engineering achievement, a flat band 3 million times the surface area of Earth, encircling a distant star. Home to trillions of inhabitants, not all of which are human, and host to amazing technological wonders, the Ringworld is unique in all...http://books.google.com/books/about/Ringworld_s_Children.html?id=-nUES0qVdmgC&utm_source=gb-gplus-shareRingworld's Children
