Thursday, November 29, 2007

Methane from a very unexpected source

Here's another source of methane (one of the most potent of the greenhouse gases) that needs to be taken into account in any climate model. It seems that certain shrubs (woody) plants themselves actually produce methane by some, as yet, unexplained mechanism, as reported in RSC Chemistry World.

Fortunately it would appear that herbaceous plants don't emit methane, but upland wooded areas may well yet turn out to be a source of at least some of the naturally occurring methane in the earth's atmosphere.

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