The Year's Best Science Fiction, Eighteenth Annual Collection - edited by Gardner Dozois.

Summation 2000 by Gardner Dozois
"The Juniper Tree" by John Kessel
"Antibodies" by Charles Stross
"The Birthday of the World" by Ursula K. LeGuin
"Savior" by Nancy Kress
"Reef" by Paul McAuley
"Going After Bobo" by Susan Palwick
"Crux" by Albert E. Cowdrey
"The Cure for Everything" by Severna Park
"The Suspect Genome" by Peter F. Hamilton
"The Raggle Taggle Gypsy-O" by Michael Swanwick
"Radiant Green Star" by Lucius Shepard (Hugo & Nebula nominee)
"Great Wall of Mars" by Alastair Reynolds
"Milo and Sylvie" by Eliot Fintushel
"Snowball in Hell" by Brian Stableford
"On the Orion Line" by Stephen Baxter (Hugo nominee)
"Oracle" by Greg Egan (Hugo nominee)
"Obsidian Harvest" by Rick Cook & Ernest Hogan
"Patient Zero" by Tananarive Due
"A Colder War" by Charles Stross
"The Real World" by Steven Utley
"The Thing About Benny" by M. Shayne Bell
"The Great Goodbye" by Robert Charles Wilson
"Tendelero's Story" by Ian McDonald
Honorable Mentions: 2000