The document discusses the ethical issues surrounding human cloning and outlines two main cloning methods - embryo splitting and nuclear transplantation. It notes differences between the methods such as the number of progenitors and genetic manipulation possibilities. Reasons for and against cloning are provided, including using cloning to help infertile couples, stem cell research, and replacing lost children. However, concerns include impacts on human individuality, commodification of women's eggs, and biological risks of reduced genetic diversity. The United Nations is exploring the issue to determine international policy on human cloning.