This fourth entry in a notable and controversial series continues to celebrate provocative fiction that explores and expands gender. Through their subversive, engaging fiction, Tiptree award–winning authors offer fascinating speculations on the ever-increasing mutability of our identities and desires. The James Tiptree, Jr. Award is an annual literary prize for speculative fiction, named for the pen name of one of science fictions most brilliant writers, Alice B. Sheldon. Authors selected for this series include Dorothy Allison, Ted Chiang, Joe Haldeman, Ursula K. Le Guin, Kelly Link, and Joanna Russ.