Similarities and differences aside, Will and Robert say being twins is great fun. His brother echoed the thought. I can't imagine not having him. The words gene therapy come with visions of Nazi-like eugenics. But experts say that type of genetic manipulation is not being done.
Researchers say embryonic stem cells offer hope of life-saving breakthroughs.
Their critics say using those cells for research or treatment kills a potential human life. Others believe transplanting animal organs into humans will unleash a plague on humankind. Supporters say cloning human embryos could help couples desperate to have children. Critics say human cloning is a slippery slope that ought to be avoided at all costs. These are not esoteric discussions that should be confined to the laboratory or the halls of government.