Template:POTD protected/2007-11-07

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 30,000 ºC (54,000 ºF), hot enough to fuse soil or sand into glass channels.