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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。

There is a man who can give a face to Adam even without his skull. Frank Bender calls himself the recomposer of the decomposed. He is a forensic artist, a specialist at bringing the dead to life. Bender works regularly for police departments around the world, giving faces to human remains, even when the skulls are almost missing. Adam’s skull is missing, but Bender will base his reconstruction on a closest skull he can find and that brings him to the American Museum of Natural History in New York City.

Gary Sawyer is an expert on reconstructing pre-historic faces. He believes this skull, found at Cycle C. is a good basis for Adam. Because he conbines modern features with still some archaic figures and a low forehead in front of and good size brewages. The C’s skull is about 100,000 years ago. Adam’s skull would be much more modern. Bender would have to estimate what thousands of years of evolution would have done to C. man’s appearance.

First, he uses his forensic skills to figure out what C man looked like. Bender can determine his feathres from the structure of the skull, the shape of the cheek bones, the line of the jaw, the wings of the nose, the size of the chin. C man is 100,000 years old. To construct the face for Adam, Bender has to update this portrait by 40,000 years. As humans evolved, the shape of our skulls changed. Brow/ shrank, the forehead became more vertical. The chin more prominent .Adam should be almost halfway between this ancient man and humans like us. Bender needs to find that midpoint. He needs a modern face to compare to the ancient skull. But not just any face. He wants someone whose lineage traces most directly back to Adam.

Wells knows where to look. In east Africa is a little known tribe called the hasabei. Their DNA links them almost straight back to Adam. They give us a glimpse into his world.