The photo of lightning bursting out during a volcanic eruption in Chile, above, was a truly awesome sight. Although the picture seemed to show a thunderstorm colliding with the cloud of volcanic ash, it actually showed a marvellous phenomenon known as volcanic lightning.
Usually, lightning is sparked off by countless tiny pieces of ice inside a turbulent thundercloud banging into one another. Each collision generates static electricity, rather like a balloon rubbed on a jumper.
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Comment: This article continues the "global warming" myth, despite scientific evidence that show that the planet is cooling instead of warming.