The explosive growth of the Chinese economy over the past seven years has been linked with a rise in emissions of man-made methane, a study has found. Methane is the second most important greenhouse gas and, molecule for molecule, it is about 20 times as potent as carbon dioxide in its ability to exacerbate global warming. Levels of methane in the atmosphere have risen since the Industrial Revolution but in recent years they appeared to have stabilised, leading scientists to ...
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