Retracing Man's Steps

From fossils and bones, paleontologists have pieced together a remarkable family tree of man's ancestors. Records of our past are found in the cave paintings at Lascaux, which show the rise of symbolic thinking; the change in larynx placement from chimp to man which documents the development of speech from gestural language; and evidence from the times when bones first began to be used as digging tools and weapons. From the rise and decline of dinosaurs to the role of mutation in the evolutionary process and environmental pressures, such as the Ice Age, which spurred man's effort to adapt, here is the journey of the homosapiens documented in fascinating detail.