Anyone who's read Lies My Teacher Told Me : Everything Your American History Textbook Got Wrong knows about the devastating consequences that Columbus's voyage and ensuing colonization had on the native people of the Americas and Africa. In a thought-provoking work that is part science fiction, part historical drama, Orson Scott Card writes about scientists in a fearful future who study that tragic past, then attempt to actually intervene and change it into something better. Tagiri and Hassan are members of Pastwatch, an academic organization that uses machines to see into the past and record it. Their project focuses on slavery and its dreadful effects, and gradually evolves into a study of Christopher Columbus. They eventually marry and their daughter Diko joins them in their quest to discover what drove Columbus west. Columbus, with whom readers become acquainted through both images in the Pastwatch machines and personal narrative, is portrayed as a religious man with both strengths and weaknesses, a charismatic leader who sometimes rose above but often fell beneath the mores of his times. As usual, Orson Scott Card uses his formidable writing skills to create likable, complex characters who face gripping problems; he also provides an entertaining and thoughtful history lesson in Pastwatch. --Bonnie Bouman