Who are the aborigines? What part did Sultan Saladin play in the Crusades? How many muscles does the human body have? When curious minds want to know, pull this comprehensive reference from the shelf! Lavish illustrations, stunning photographs, detailed maps, and concise entries will keep young readers turning pages as they discover the wonderful world of information. Includes cross-references, timelines, and weblinks. (Includes entry on evolution.) 468 pages, hardcover.