The Spear of Mars. As inevitable as the colonization of Space: invasions of earth, the solar system at war -- Wherever humans go, they take their conflicts with them. The socially organized application of force is called war. Right now mankind has begun to spread out into the solar system, taking with him his technologies and his social institutions. The Spear of Mars has been flung. There's no stopping it: It Will Strike. There will be war between the worlds... Includes: The Screwfly Solution, by Raccoona Sheldon (winner, 1977 Nebula Award. Nominated, 1978 Hugo Award); The Sword, by Frank Quattrocchi; Invasions of Earth, by L. J. Stecher, Jr.; UFOs and Stranger Intruders, by Joseph F. Goodavage; Temple Guardian, by Kevin O'Donnell, Jr.; Mirror, Mirror, by Alan E. Nourse; Man: A Transitional Animal, by Carl Sagan; Balaam, by Anthony Boucher; Encased in the Amber of Death, by Robert Frazier; Cold Victory, by Poul Anderson; Women Under Fire, by Vicki Ann Heydron; This Faithful Soldier's Life, by James Stevens-Arce; Ender's Game, by Orson Scott Card (nominated, 1978 Hugo Award); Fool's Mate, by Robert Sheckley; Wings Out of Shadow, by Fred Saberhagen.