Who Am I?

In four chapters that cover memory, identity, DNA, social interactions, development, disease, and more, Walker investigates what it means to be a human being. The full-color spreads are a busy mix of photographs, illustrations, microscopic imagery, and sidebars, offering readers plenty to examine on every page. Walker uses a no-nonsense q&a-style format (“Where do we come from?”), answering each question matter-of-factly (“DNA evidence shows that we evolved in Africa and then spread through the Middle East to the Far East, Australia and Oceania, Europe, and the Americas”). The chapters conclude with additional facts and questions to test readers’ retention of the preceding section. Ages 9–up. (June)