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" Nitrogen oxides (NOx), which contribute to acid rain, are emitted by cars and coal plants, but NOx is also created by lightning. Helping to isolate the effect of emissions, researchers have made the first direct measurements of lightning-related NOx at the International Center for Lightning Research and Testing at Camp Blanding, Fla.  Rockets trailing 2300 ft. of copper wire were fired into thunderclouds, triggering lightning. Along with conducting pure science, the center researches products such as surge protectors. The recent study showed that, while man-made sources aren&amp;#039;t off the hook, lightning creates more NOx. LIVE WIRE Wired rockets are the best way to trigger strikes, making them a common tool for lightning research. The rocket releases a spark when it hits a thundercloud, which then sends a massive arc down the wire.LIGHTNING ALLEY Florida is the perfect place for a lightning lab, thanks to wet winds blowing in from both sides of the peninsula: Hot, humid, rising air often leads to thunderstorms.LAUNCH CYCLE Every year, about 60 wired rockets launch from Camp Blanding, attracting lightning roughly half the time.  "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/science/energy/a1698/4217464/>