Korean Investigators Harvest First Stem Cells From a Cloned Human Embryo

Scientists in South Korea have for the first time cloned a human embryo and harvested stem cells from it, a long-awaited achievement expected to usher in a brave new world of powerful medical treatments and -- some worry -- the chilling possibility of cloning people.

Experts have spent years talking, writing, and hand-wringing about the day when human embryos would be successfully cloned, but the news still caught many off guard.

"It's literally a breathtaking moment,

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