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3#
发表于 2007-11-8 08:24
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We'll live longer,120 years?If the normal aging process is basically a furious,invisible contest in our cells. a contest between damage to our DNA and our cells'ability to repair that damage,then 2lst century strides in genetic medicine may let us control and even reverse the process.
But before we push scientists to do more,consider: Do we really want to live in a world where no one grows old and few children are born because the planet can hold only so many people? Where would new ideas come from? What would we do with all that extra time? |
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