A new study reported in Nature (Sci-Hub mirror) tracks down the origins of the mysterious rise in CFC-11, a banned ozone-depleting greenhouse gas whose rise was first reported a year ago, and blames the increase on manufacturing in eastern China.
Chinese state authorities have tacitly validated the study's findings, promising a crackdown on "rogue manufacturers" in the region.
CFC-11 is used as a cheap alternative to other chemicals during the production of polyurethane insulation. The researchers also believe that smaller-scale manufacturers may be using CFC-11 in India, Africa and South America.
CFC-11 is a potent greenhouse gas, 5,000 times more deadly than CO2. It has been banned since 1987 under the Montreal accords.
The Chinese say they have already started to clamp down on production by what they term "rogue manufacturers". Last November, several suspects were arrested in Henan province, in possession of 30 tonnes of CFC-11.
Clare Perry from the Environmental Investigations Agency (EIA) said that the new findings re-affirmed the need to stamp out production.
"I think with this study, it is beyond doubt that China is the source of these unexpected emissions, and we would hope that China is leaving no stone unturned to discover the source of the CFC-11 production.
"Unless the production of the chemical is shut down it will be near impossible to end the use and emissions in the foam companies."
Ozone layer: Banned CFCs traced to China say scientists [Matt McGrath/BBC]
Increase in CFC-11 emissions from eastern China based on atmospheric observations (Sci-Hub mirror) [M Rigby et al/Nature]
ProPublica reports the administration of Donald Trump has given coronavirus bailout funds to two different elite private jet companies which were owned or founded by individuals who donated to the Trump campaign.
• In the future, everything will be eaten by Mark Zuckerberg Facebook is acquiring Giphy in a deal valued at roughly $400 million. The GIF-sharing service was valued at ~$600 million in its latest funding round.
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