寻找有助于解释我们如何以及为何主宰地球生命的关键线索。他将人类的非洲起源追溯到近三百万年前，一路上他进入法国南部的洞穴，石器时代的人们在那里创作了富有想象力的冰河时代动物画作。他还前往巴布亚新几内亚寻找一些以前从未关注过白人的狩猎采集者

A look for crucial clues that help to explain how and why we have come to dominate life on Earth. He traces back the African origins of humans to nearly three million years ago, and along the way he goes into caves in Southern France where stone-age people created imaginative paintings of ice-age animals. He also travels to Papua New Guinea to find some hunter-gatherers who have never before set eyes on white people

David ATTENBOROUGH cherche à expliquer comment nous sommes arrivés à dominer la vie sur terre,retraçant les origines africaines des humains jusqu'à il y a près de trois millions d'années.