
Think, for a moment, about lightning. With all our talk of sci-fi and high-tech, we often forget that, in our world, since long before the dawn of man, rays of fatal electricity have shot down from the sky to stab the earth. Crazy. And it's crazier still to think that we've never tamed it -- never used it to power our personal hovercrafts. Of course,
before the other day, we'd never taken an X-ray image of lightning, either...
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