Women may hold up more than half the sky on earth, but it has been different in heaven: science fiction still is very much a preserve of male protagonists, mostly performing by-the-numbers quests. In The Other Half of the Sky, editor Athena Andreadis offers readers heroes who happen to be women, doing whatever they would do in universes where they're fully human. Contributors Melissa Scott, Alex Jablokov, Nisi Shawl, Sue Lange, Vandana Singh, Joan Slonczewski, Terry Boren, Aliette de Bodard, Ken Liu, Alex Dally MacFarlane, Martha Wells, Kelly Jennings, C. W. Johnson, Cat Rambo, Christine...