11.   But fertility experts in the United States said it was only a matter of time before humans were cloned.

12.   Calls for legislation have mounted with the announcement by two groups this year of their intent to clone a human.

13.   Cloning a sheep suggests it may be possible to clone a human.

14.   Doctors said Wednesday it probably is possible to clone humans through the technique, but that it is morally reprehensible to attempt it.

15.   Even if a human could be cloned, some argue, the prospect challenges traditional notions of parenthood, identity and human rights.

16.   For almost two years, Zavos has boasted he would be the first to clone a human.

17.   Given such problems, the consensus among most scientists is that Zavos and Antinori are being hasty in their plans to clone humans.

18.   He raised a question about whether in efforts to clone humans, would human embryos be destroyed or discarded?

19.   He says he would never consider cloning whole humans, because that would serve no practical purpose.