人类起源之谜 National Geographic Specials: Mysteries of Mankind认领

Actor Richard Kiley narrates this investigation into both new and well-known clues to the origins of the human race. Razor -sharp tools of our ancestors are examined and discussed by historians and experts. A number of fossilized skeletons that are more than a million years old are examined by scientists. Ash-entombed footprints provide a trail into centuries that ended long ag...