Somebody told me about Dyson spheres in the mid-1970s. Maybe it was Poul Anderson. Freeman Dyson’s revolutionary construction had habitats and widgetry of any description surrounding a star. Point was ...

Ringworld by Larry Niven was published in 1970 to huge acclaim, winning both Hugo and Nebula awards; it's been in print ever since. It came out when humans had just landed on the moon and it looked ...

Ringworld by Larry Niven was published in 1970 to huge acclaim, winning both Hugo and Nebula awards; it’s been in print ever since. It came out when humans had just landed on the moon and it looked ...