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Lightning
Experts still aren't sure what triggers it, but they suspect cosmic rays from outer space. 
How Lightning WorksIt's like a giant spark in the sky, though with a few puzzling differences. 
Lightning VarietiesYour average jagged bolt is just the beginning. There are also balls, blue jets, red sprites, elves... 
Ask the ExpertLightning expert Joe Dwyer of the Florida Institute of Technology answers viewer questions about lightning.
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© | Created October 2005 |
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