Grateful acknowledgement is made for permission to reprint the following material:

“The Juniper Tree” by John Kessel. Copyright © 2000 by John Kessel. First published in Science Fiction Age, January 2000. Reprinted by permission of the author.

“Antibodies” by Charles Stross. Copyright © 2000 by Interzone. First published in Interzone, July 2000. Reprinted by permission of the author.

“The Birthday of the World” by Ursula K. Le Guin. Copyright © 2000 by Mercury Press, Inc. First published in The Magazine of Fantasy & Science Fiction, June 2000. Reprinted by permission of the author and the author’s agents, The Virginia Kidd Literary Agency.

“Saviour” by Nancy Kress. Copyright © 2000 by Dell Magazines. First published in Asimov’s Science Fiction, June 2000. Reprinted by permission of the author.

“Reef” by Paul J. McAuley. Copyright © 2000 by Paul J. McAuley. First published in Skylife (Harcourt), edited by Gregory Benford and George Zebrowski. Reprinted by permission of the author.

“Going after Bobo” by Susan Palwick. Copyright © 2000 by Dell Magazines. First published in Asimov’s Science Fiction, May 2000. Reprinted by permission of the author.

“Crux” by Albert E. Cowdrey. Copyright © 2000 by Mercury Press, Inc. First published in The Magazine of Fantasy & Science Fiction, March 2000. Reprinted by permission of the author.

“The Cure for Everything” by Severna Park. Copyright © 2000 by SCIFI.COM. First published electronically on SCI FICTION, June 22. Reprinted by permission of the author.

“The Suspect Genome” by Peter F. Hamilton. Copyright © 2000 by Interzone. First published in Interzone, June 2000. Reprinted by permission of the author.

“The Raggle Taggle Gypsy-O” by Michael Swanwick. Copyright © 2000 by Michael Swanwick. First published in Tales of Old Earth (Tachyon). Reprinted by permission of the author.

“Radiant Green Star” by Lucius Shepard. Copyright © 2000 by Dell Magazines. First published in Asimov’s Science Fiction, August 2000. Reprinted by permission of the author.

“Great Wall of Mars” by Alastair Reynolds. Copyright © 2000 by Alastair Reynolds. First published in Spectrum SF 1. Reprinted by permission of the author.

“Milo and Sylvie” by Eliot Fintushel. Copyright © 2000 by Dell Magazines. First published in Asimov’s Science Fiction. March 2000. Reprinted by permission of the author.

“Snowball in Hell” by Brian Stableford. Copyright © 2000 by Dell Magazines. First published in Analog Science Fiction and Fact, December 2000. Reprinted by permission of the author.

“On the Orion Line” by Stephen Baxter. Copyright © 2000 by Dell Magazines. First published in Asimov’s Science Fiction, October/November 2000. Reprinted by permission of the author.

“Oracle” by Greg Egan. Copyright © 2000 by Dell Magazines. First published in Asimov’s Science Fiction, July 2000. Reprinted by permission of the author.

“Obsidian Harvest” by Rick Cook and Ernest Hogan. Copyright © 2000 by Dell Magazines. First published in Analog Science Fiction and Fact, April 2000. Reprinted by permission of the authors.

“Patient Zero” by Tananarive Due. Copyright © 2000 by Mercury Press, Inc. First published in The Magazine of Fantasy & Science Fiction, August 2000. Reprinted by permission of the author.

“A Colder War” by Charles Stross. Copyright © 2000 by Charles Stross. First published in Spectrum SF 3. Reprinted by permission of the author.

“The Real World” by Steven Utley. Copyright © 2000 by SCIFI.COM. First published electronically on SCI FICTION, September 6. Reprinted by permission of the author.

“The Thing About Benny” by M. Shayne Bell. Copyright © 2000 by M. Shayne Bell. First published in Vanishing Acts (Tor), edited by Ellen Datlow. Reprinted by permission of the author.

“The Great Goodbye” by Robert Charles Wilson. Copyright © 2000 by Robert Charles Wilson. First published in Nature, 11 September 2000. Reprinted by permission of the author.

“Tendeléo’s Story” by Ian McDonald. Copyright © 2000 by Ian McDonald. First published as a chapbook, Tendeléo’s Story (PS Publishing). Reprinted by permission of the author.