50TH ANNIVERSARY EDITION—WITH A NEW INTRODUCTION BY DAVID MITCHELL AND A NEW AFTERWORD BY CHARLIE JANE ANDERSUrsula K. Le Guin’s groundbreaking work of science fiction—winner of the Hugo and Nebula Awards.A lone human ambassador is sent to the icebound planet of Winter, a world without sexual prejudice, where the inhabitants’ gender is fluid. His goal is to facilitate Winter’s inclusion in a growing intergalactic civilization. But to do so he must bridge the gulf between his