For the first time, scientists at the Oregon Health and Science University have created human embryos that are genetic copies of living people. They have used these to make
stem cells, cells that can divide into different specialized cells and self-renew to keep producing more stem cells. You can watch a video of a beating heart successfully made from stem cells
here, and if you're interested on how they actually did it, scroll on down about halfway through the article.
The successful development of stem cells has all kinds of medical implications. They can be used to grow replacements for all kinds of diseased cells and can treat a wide range of diseases with personalized body tissues. Thus, this stem cell development has the potential to treat everything from diseased blood cells to diseased brain cells to patients with Alzheimer's disease to diabetic people.
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However, in addition to the medical advantages of stem cells, this development also means that humans now have the ability to clone themselves. And as cool as this may sound, it also brings to light many ethical questions. Many, if not most scientists have flatly declared human cloning unethical and scientifically irresponsible. That being said, it is hard to imagine that no one will go ahead and do it with the knowledge and methodology of human cloning now available. 13 states currently ban
reproductive cloning (human clones), and seven states ban "
therapeutic cloning," which is cloning for medical treatment (i.e. growing a replacement organ). However, the federal government has yet to set restrictions or determine legality of either practice.
So what do you guys think: How much cloning should be allowed? Should we allow therapeutic cloning and/or reproductive cloning, taking into account the ethics of such practices? Should human cloning legality and restrictions be left up to the states, or should there be national legislation regarding its usage?