Gregory Dale "Greg" Bear (born August 20, 1951) is an American writer best known for science fiction. His work has covered themes of galactic conflict (Forge of God books), artificial universes (The Way series), consciousness and cultural practices (Queen of Angels), and accelerated evolution (Blood Music, Darwin's Radio, and Darwin's Children). His most recent work is the Forerunner Trilogy, written in the Halo universe. Greg Bear has written 44 books in total.