By Susan R. Matthews 

By Travis S. Taylor 

By Daniel Suarez 

By Karen Traviss 

By Connie Willis 

By Andre Norton 

By Taylor Anderson 

By Ramez Naam 

By Ramez Naam 

By Terry C. Johnston 

By Joel Dane 

By Brian Aldiss 

By S. L. Viehl 

By Robert Repino 

By Rafal Kosik 

By Rafal Kosik 

By Keith Thomas 

By Damon Knight 

By Ray Bradbury 

By James Kennedy 

By John Meaney 

By Neal Asher 

By Chris Beckett 

By Alex Bledsoe