The Year's Best Science Fiction: Eighteenth Annual Collection by Steven Utley, Ian McDonald, Peter F. Hamilton, Alastair Reynolds, Eliot Fintushel, Brian M. Stableford, John Kessel, Stephen Baxter, Greg Egan, Charles Stross, Ursula K. Le Guin, Rick Cook, Nancy Kress, Ernest Hogan, Tananarive Due, Susan Palwick, Michael Swanwick, Albert E. Cowdrey, M. Shayne Bell, Lucius Shepard, Robert Charles Wilson, Severna Park, Gardner Dozois, Paul McAuley