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Trees appear to ionise surrounding air

Trees may play an important role in the natural electrification of the atmosphere, according to new research.

The study found the airborne concentration of positive and negative ions was twice as high in heavily wooded as in open areas. Researchers believe this may be because trees emit trace amounts of radon, an electrically-charged gas produced by the natural decay of radium in rocks then absorbed by trees through groundwater.

Read more at Queensland University of Technology

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