Download or read book Rollback written by Robert J. Sawyer and published by Macmillan. This book was released on 2007-04-03 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sawyers Hugo and Nebula Award-winning novel explores morals and ethics on both human and cosmic scales. Likable characters facing big ethical dilemmas . . . [a] smoothly readable near-future SF novel.--"Publishers Weekly."