Anatomist and anthropologist Alice Roberts reveals the story of human evolution as told through the body, revealing that the way people think, look and behave is a product of the six-million-year journey that took man from forest-dwelling apes to the most successful species on the planet. She begins with the skeleton, revealing how the evolutionary journey of man's ancestors has affected everything from the way a person walks and runs to the back pain they suffer, their narrow waist and the shape of their bottom.