Chemicals used in refrigerators and freezers may have been responsible for half of Arctic climate change in the past 50 to 60 years, scientists say.
Illegal production of CFC-11 in China has a climate impact equivalent to 16-20 coal power plants, the Environmental Investigation Agency estimates.
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Leaded petrol was safe. Its inventor was sure of it.
“Hope is essential – despair is just another form of denial,” Al Gore said last week, in an interview to promote the sequel to his 2006 climate change documentary An Inconvenient Truth. As well as the very bad news of Donald Trump’s science-denying presidency, An Inconvenient Sequel: Truth to Power, which opens in the UK today, brings good news: the plummeting cost of renewable electricity and the 2015 Paris climate agreement.
Despite a ban on chemicals like chlorofluorocarbons, the ozone hole over Antarctica remains nearly as large as it did when the Montreal Protocol was signed in 1987. Scientists now warn of new threats to the ozone layer, including widespread use of ozone-eating chemicals not covered by the treaty.
A U.S. court ruled the EPA lacked authority to regulate the powerful greenhouse gases, used for cooling and refrigeration. Industry had supported the regulations.