Stem Cells, Over EasyAs the world reacts to the South Korean stem-cell debacle, the history of in vitro fertilization offers a real-world example of responsibility in the handling and use of human eggs spanning nearly three decades.The incident is a black eye for a field that raises deep questions about the moral limits of science and the sanctity of human life, however it is defined. But it should not be taken as proof that scientists can't be trusted to responsibly handle the raw material -- human eggs -- that's the crux of the controversy and the essential ingredient in their research. ... |