Scientists Confirm China as Major Source of Banned Ozone-Depleting Chemicals

Despite being banned in 2010, about 40,000 tons of carbon tetrachloride, an ozone-depleting compound, are still emitted into the atmosphere every year. But the origins of the illegal emissions have long baffled scientists. Now, an international team of researchers has tracked down the source of nearly half of the emissions to eastern China, according to a recent study published in the journal Geophysical Research Letters.

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