The Year's Best Science Fiction: Sixteenth Annual Collection by Greg Egan and Chris Lawson and Gwyneth Jones and Geoffrey A. Landis and William Barton and Jim Grimsley and Cherry Wilder and Ian R. MacLeod and Cory Doctorow and Tanith Lee and Bruce Sterling and Ian McDonald and Ursula K. Le Guin and Paul McAuley and Robert Charles Wilson and Howard Waldrop and Robert Reed and William Browning Spencer and Michael Swanwick and Ted Chiang and Stephen Baxter and Rob Chilson and Liz Williams