Laser labs race for the petawatt: four years after the world's most powerful laser was dismantled, about a dozen similar beams are set to fire for the record books. Their work will affect research on everything from fusion to astrophysics. (News Focus).
Jul 11, 2003; A few hundred joules of energy doesn't easily impress. It's gone almost as soon as you flip on a light switch. And it isn't...