Has man made progress through the ages? Has he utilized himself and his surroundings to the best possible degree? What actually comprises progress? Here, published for the first time in America, are a noted scholar's brilliant and fascinating answers to these vital questions, V. Gordon Childe goes back 340,000 years in his fascinating quest for the major contributions that man has made through the ages, revealing the most significant discoveries which man has made from his earliest beginnings to modern times,