In 1994, a team of archeologists uncovered the bones of a human ancestor in Ethiopia's Afar region. Radiometric dating indicated the skeleton, classified as Ardipithecus ramidus, was 4.4 million years old, more than a million years older than "Lucy," then the oldest known human ancestor. This book is the first full-length exploration of Ardi, the fossil men who found her, and her impact on what we know about the origins of the human species.