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美国国家地理学会的遗传学家斯班瑟•威尔斯利用DNA技术经过多方的寻找，终于找到这位人类祖先———科学亚当。今天，他的基因已经遍布于地球上每个男人的身上。

How could one man change/ his whole species?Wells has a theory--it's cutting edge and highly controversial. He believes Adam may have been the first man with the ability to think as we do--the first truly modern man. If Wells had his way,he'd go back in time to find out.The ancient Hazabe tribe in Tanzania may offer the next best thing--a window into Adam's world. As people, the Hazabes are as modern as any of us. But as a society,they have chosen to retain the lifestyle of the earliest modern humans--the lifestyle of Adam.

The Hazabe are hunter gatherers. Survival in this environment is an extraordinary challenge.They rely on the kind of ingenuity that Wells believes could have originated with Adam himself.It could almost be Adam's claim preparing for the hunt/.The Hazabe had figured out a way to turn local trees into liver weaponry.The bows are strong but flexible.Fire straightens the arrow sharps.They look simple,but when they appear/, they were revolutionary--weapons that kill at a distance,deadly accurate.The Hazabe set out,just as Adam and his sons may have done,to pick their weapons and their brains against their pray.

The Hazabe's hunting techniques work.They had to be invented,developed by someone-someone with the insight to go beyond the techniques used by the people before,and Wells believes it may have been Adam himself who first showed this intelligence.A culture of innovation is one key to the success of our species.But what amplifies this genius is another unique skill--language.Wells believes Adam may have had a brand new ability to use complex speech.Astonishingly,the Hazabe could show us how Adam spoke.