Lepisma

On the planet Winter, there is no gender. The Gethenians can become male or female during each mating cycle, and this is something that humans find incomprehensible.

The Ekumen of Known Worlds has sent an ethnologist to study the Gethenians on their forbidding, ice-bound world. At first he finds …

This is a collection of science fiction short stories, cleverly cobbled together to form a coherent and very readable novel about a future colonization of Mars. As the stories progress chronologically the author tells how the first humans colonized Mars, initially sharing the planet with a handful of Martians. When …