| Picture of the day | |
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Lightning is an atmospheric discharge of electricity, which typically occurs during thunderstorms, and sometimes during volcanic eruptions or dust storms. A bolt of lightning can travel at a speed of 220,000 km/h (136,000 mph), and can reach temperatures approaching 30,000ºC (54,000ºF), hot enough to fuse soil or sand into glass channels. Photo credit: Fir0002 |
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