As eugenics is defined, it is very difficult to make a clear distinction between science (medicine, genetic engineering) and eugenics as a included field. And to set a line over which genetic engineering should not go further, according to moral, legal and religious norms. If we accept the help of genetics in finding ways to fight cancer, diabetes, or HIV, we also accept positive eugenics as they are defined now. And if we accept genetic screening, and interventions on the unborn baby, or abortion, we also implicitly accept negative eugenics. In addition, at government level, although eugenics are officially denied, it has been legalized in many countries until recently, and is still accepted and legalized, albeit in subtle forms, even these days. The section Introduction defines the term and classification modes. I then analyze various issues raised by the ethics of liberal eugenics in New Eugenics, and I have developed a special section for The Future of Eugenics, focusing on the human genome project.