9780312872007 | Tor Books, July 1, 2001, cover price $24.95 | About this edition: Clones of survivors of a catastrophic asteroid collision that had decimated Earth and made it uninhabitable for humans join forces with alien travelers to rebuild the planet's ecosphere so that humans and aliens alike can build new lives on Earth.

9780765344977 | Tor Science Fiction, February 1, 2003, cover price $6.99 | About this edition: Clones of survivors of a catastrophic asteroid collision that had decimated Earth and made it uninhabitable for humans join forces with alien travelers to rebuild the planet's ecosphere so that humans and aliens alike can build new lives on Earth.

9781429982450 | 1 edition (Tor Books, June 8, 2010), cover price $6.99

9781573661096 | 1 edition (Fc2/Black Ice Books, August 1, 2003), cover price $19.95 | About this edition: In an alternate history story in which the American government returns the Great Plains to Native Americans, a group of characters at a bowling alley discovers a copy of a treaty signed by a reluctant General Sherman that effectively gives all of the Americas back to Native Americans.

9780821414071 | 1 edition (Ohio Univ Pr, December 1, 2001), cover price $20.00 | About this edition: After viewing the wasted land of an old strip-mine in Ohio, a former factory worker sets out to make it a place of beauty once again by transforming it into a productive farm.