“Genesis” by Poul Anderson. Copyright © 1995 by Poul Anderson. First appeared in Far Futures, edited by Gregory Benford.
“Gossamer” by Stephen Baxter. Copyright © 1995 by Stephen Baxter. First published in Science Fiction Age.
“On the Orion Line” by Stephen Baxter. Copyright © 2000 by Dell Magazines. First appeared in Asimov’s Science Fiction, October/November 2000. Reprinted by permission of the author.
“Matter’s End” by Gregory Benford. Copyright © 1991 by Abbenford Associates. First published in Full Spectrum 3 (Doubleday Foundation). Reprinted by permission of the author.
“Immersion” by Gregory Benford. Copyright © 1996 by Abbenford Associates. First published in Science Fiction Age, March 1996. Reprinted by permission of the author.
“Mount Olympus” by Ben Bova. Copyright © 1999 by Dell Magazines. First appeared in Analog, February 1999.
“An Ever-Reddening Glow” by David Brin. Copyright © 1996 by David Brin. First appeared in Analog, February 1996.
“Reality Check” by David Brin. Copyright © 2000 by David Brin. Reprinted by permission from Nature, Vol. 404, p. 229. Copyright © 2000 Macmillan Magazines, Ltd.
“Understand.” by Ted Chiang. Copyright © 1991 by Ted Chiang. First appeared in Asimov’s Science Fiction, August 1991.
“The Hammer of God” by Arthur C. Clarke. Copyright © 1992 by Arthur C. Clarke. First published in Time, Fall 1992. Reprinted by permission of Scovil Chichak Galen, Inc.
“Exchange Rate” by Hal Clement. Copyright © 1999 by DNA Publications, Inc. First appeared in Absolute Magnitude, Winter 1999.
“Reasons to Be Cheerful” by Greg Egan. Copyright © 1997 by Greg Egan. First appeared in Interzone 118, April 1997.
“Wang’s Carpets” by Greg Egan. Copyright © 1995 by Greg Egan. First appeared in New Legends, edited by Greg Bear.
“Built upon the Sands of Time” by Michael Flynn. Copyright © 2000 by Michael Flynn. First appeared in Analog, July/August 2000.
“For White Hill” by Joe W. Haldeman. Copyright © 1995 by Joe W. Haldeman. First appeared in Far Futures, edited by Gregory Benford.
“Madam Butterfly” by James P. Hogan. Copyright © 1997 by James P. Hogan. First appeared in Free Space.
“Think like a Dinosaur” by James Patrick Kelly. Copyright © 1995 by James Patrick Kelly. First appeared in Asimov’s Science Fiction, June 1995.
“Beggars in Spain” by Nancy Kress. Copyright © 1991 by Nancy Kress. First appeared in Asimov’s Science Fiction, April 1991.
“A Walk in the Sun” by Geoffrey A. Landis. Copyright © 1991 by Geoffrey A. Landis. First appeared in Asimov’s Science Fiction, October 1991.
“Different Kinds of Darkness” by David Langford. Copyright © 2000 by David Langford. First published in Fantasy & Science Fiction, January 2000.
“The Mendelian Lamp Case” by Paul Levinson. Copyright © 1997 by Paul Levinson. First appeared in Analog, April 1997.
“Gene Wars” by Paul J. McAuley. Copyright © 1991 by Paul J. McAuley. First appeared in Interzone 48, June 1991.
“Reef” by Paul J. McAuley. Copyright © 2000 by Paul J. McAuley. First published in Skylife, edited by Gregory Benford and George Zebrowski. Reprinted by permission of the author.
“Into the Miranda Rift” by G. David Nordley. Copyright © 1993 by G. David Nordley. First published in Analog, July 1993.
“Hatching the Phoenix” by Frederik Pohl. Copyright © 1999 by Frederik Pohl. First published in Amazing Stories, Fall 1999-Winter 2000.
“Marrow” by Robert Reed. Copyright © 1997 by Robert Reed. First published in Science Fiction Age, July 1997. Reprinted by permission of the author.
“Great Wall of Mars” by Alastair Reynolds. Copyright © 2000 by Alastair Reynolds. First published in Spectrum SF. Reprinted by permission of the author.
“Sexual Dimorphism” by Kim Stanley Robinson. Copyright © 1999 by Kim Stanley Robinson. First appeared in Asimov’s Science Fiction, October/November 1999.
“Arthur Sternbach Brings the Curveball to Mars” by Kim Stanley Robinson. Copyright © 1999 by Kim Stanley Robinson. First appeared in Asimov’s Science Fiction, August 1999.
“The Shoulders of Giants” by Robert J. Sawyer. Copyright © 2000 by Robert J. Sawyer. First appeared in Star Colonies.
“Halo” by Karl Schroeder. Copyright © 1996 by Karl Schroeder. First appeared in Tesseracts 5.
“The Lady Vanishes” by Charles Sheffield. Copyright © 1996 by Charles Sheffield. First published in Science Fiction Age, November 1996. Reprinted by permission of the author.
“Microbe” by Joan Slonczewski. Copyright © 1995 by Joan Slonczewski. First appeared in Analog, August 1995.
“A Career in Sexual Chemistry” by Brian M. Stableford. Copyright © 1987 by Brian M. Stableford. First appeared in Interzone, Summer 1987.
“The Good Rat” by Allen Steele. Copyright © 1995 by Allen Steele. First appeared in Analog, Mid-December 1995.
“Bicycle Repairman” by Bruce Sterling. Copyright © 1996 by Bruce Sterling. First published in Intersections: The Sycamore Hill Anthology, edited by John Kessel, Mark L. Van Name, and Richard Butner. Reprinted by permission of the author.
“Taklamakan” by Bruce Sterling. Copyright © 1998 by Bruce Sterling. First published in Asimov’s Science Fiction, October/November 1998.
“Griffin’s Egg” by Michael Swanwick. Copyright © 1991 by Michael Swanwick. First appeared as a Legend Novella in hardcover.
“Fast Times at Fairmont High” by Vernor Vinge. Copyright © 2001 by Vernor Vinge. First appeared in The Collected Stories of Vernor Vinge.
“A Niche” by Peter Watts. Copyright © 1994 by Peter Watts. First appeared in Tesseracts 3.
“Kinds of Strangers” by Sarah Zettel. Copyright © 1999 by Sarah Zettel. First appeared in Analog, October 1999.