The world of science and the public at large were both shocked and fascinated by the announcement in the journal Nature by Ian Wilmut and his colleagues that they had successfully cloned a sheep from a single cell of an adult sheep (Wilmut 2003). Scientists were in part surprised, because many had believed that after the very early stage of embryo development at which differentiation of cell function begins to take place, it would not be possible to achieve cloning of an adult mammal. But some scientists and much of the public were troubled or apparently even horrified at the prospect that if adult mammals such as sheep could be cloned, then cloning of adult humans by the same process would likely be possible as well. Of course, the process is far from perfected even with sheep; it took 276 failures by Wilmut and his colleagues to produce Dolly, their one success. Whether the process can be successfully replicated in other mammals, much less in humans, is not now known. But those who were horrified at the prospect of human cloning were not relieved by the fact that the science with humans is not yet there, for it looked to them now perilously close. Human cloning will be achieved sooner or later, there are people that argue against it and its ethical dilemmas but also there are the people who see the many and great benefits that cloning could have on our society and medicine.
             The main place that cloning could have huge benefits is in medicine and treating diseases "Non-reproductive cloning raises fewer ethical dilemmas than reproductive cloning and has future therapeutic potential. A range of diseases that are associated with damage to organs such as the heart and brain could theoretically be treated using cloned embryonic stem (ES) cells." (Wilmut, 2003) Human cloning technology could be used to reverse heart attacks.  Scientists believe that they may be able to treat heart attack victims by cloning their healthy heart...