The document provides summaries of 12 science fiction books for young adults that deal with themes of survival, government control, genetic engineering, time travel, and more. Some of the books summarized include The Hunger Games by Suzanne Collins about a competition where teens fight to the death for entertainment, Among the Hidden by Margaret Patterson Haddix about a future where families are limited to two children, and I am Number Four by Pittacus Lore about an alien hiding on Earth developing powers to fight invaders.