Some alarming news from the stratosphere. Chinese foam manufacturers are releasing an ozone-destroying chemical into the air that goes against an international agreement meant to fix the ozone layer, scientists announced in a study Wednesday. The chemical is a chlorofluorocarbon known as trichlorofluoromethane (CFC-11), which the world agreed to phase out starting in 2010. But just in the past six years, emissions of CFC-11 have increased by around 7,000 tons each year, and the source is eastern China, the study suggests.
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