In 1991, a small Medieval prayer book was sold at auction. Miraculously, some original writings of Archimedes, the brilliant Greek mathematician, were discovered hidden beneath the religious text. Through scholarly detective work with the help of modern technology, this book now reveals Archimedes' stunningly original concepts, ideas, and ...

The more researchers learn about the great apes—chimpanzees, bonobos, gorillas, and orangutans (see Our Family Tree)—the more evidence they find of creative intelligence. What, then, is the essential difference between us and them? ''Ape Genius,'' a NOVA-National Geographic special, explores that provocative question and examines ...