In theory, yes—but in reality, human cloning has many technical obstacles, as well as moral, ethical, philosophical, religious, and economic issues to be resolved before a human being can be cloned. At the present time, most scientists would agree that cloning a human being is unsafe—too many variables are involved in such an endeavor—and many continue to say it is ethically wrong. But that doesn’t mean some researchers will not stop trying to push the issue: For example, in 2004, South Korean researchers claimed to have cloned a human embryo in a test tube, but no proof was found, and the researchers retracted their claim in 2006.