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World
Return of the CFC
On Wednesday, a group of scientists reported that emissions of a banned ozone-depleting industrial gas, CFC-11, are on the rise. Scientists suggest that company(s), probably in East Asia, may secretly be manufacturing the pollutant – a violation of an international accord. Despite being phased out under an environmental pact, the Montreal Protocol, emissions of CFC-11 have risen 25 percent since 2012. CFC-11 and other chlorofluorocarbons deplete the atmospheric ozone that helps filter ultraviolet radiation.The map in this video depicts ozone concentrations over the Antarctic over the past four decades. Click on the map to learn more.
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