What would the world be like if the space race started during World War II? If Teddy Roosevelt had fought in World War I? If Joseph McCarthy had been elected President? Those and other questions are answered in these nine stories of alternate histories, when the world as we know it might have turned out different than it is today, if only one minor (or major) change had occurred in history. Included in this collection are: "A Massachusetts Yankee in King Arthur's Court" by Harry Turtledove; "Ike at the Mike" by Howard Waldrop; "Looking for the Fountain" by Robert Silverberg; "The Return of William Proxmire" by Larry Niven; "The Arrival of Truth" by Kristine Kathryn Rusch; "Goddard's People" by Allen Steele; "Over There" by Mike Resnick; "Bloodstained Ground" by Brian Thomsen; and "We Could Do Worse" by Gregory Benford.