I have been taking part in a very interesting discussion in comments on the Tennessean. It deals with when the beginning of human live occures. One of the key issues is IVF, invetro fertilization. I have been surprised to learn that about 400,000 embryos are frozen in the United States currently and that one percent of babies born in Isreal are from IVF. Those arguing against ESC skip the problem of these embryos. They put it off by offering embryo adoption and by frozen storage. Neither is a solution.