There are writers of world renown whose reputation rests on one great book. There are others who write more prolifically but always in the same territory. And then there's Margaret Atwood whose output fizzes with energy, diversity and experimentation. She is best known for her novels, the Handmaids Tale, the Blind Assassin, Oryx and crake. But she has also written poetry, blog fiction and this year a superhero comic book. She has a worldwide legion of fans. So what keeps her creative juices flowing?(Photo: Author Margaret Atwood at the 18th Annual LA Times Festival Of Books 2013. Credit: Imeh Akpanudosen/Getty Images)