Occupation: Scientist, New York Stem Cell Foundation
No one has yet been able to clone a human being, but Egli has come the closest. One of the few scientists in the world adept at nuclear transfer the technique that generated Dolly the sheep, the first cloned mammal Egli has cloned human skin cells. Why bother, given the ethical and biological challenges of creating mini-mes? Because the technique could generate embryonic stem cells from patients that could be used to treat diabetes, heart disease and Alzheimer's.