WASHINGTON — A hot new tool to edit the human genetic code has a big wow factor: the promise of long-sought cures for intractable diseases. But depending on how it's used, that same tool could alter human heredity. The debate has brought hundreds of scientists and ethicists from 20 countries to a highly unusual, three-day meeting in Washington on the ethics of human gene editing.
Scientists, ethicists tackle gene editing's ethics, promise
New tool brings 'deep and disturbing questions'


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