Montreal Protocol
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Deal to protect ozone layer may have sparked new contamination issueCanadian researchers have found the chemicals used to replace the banned ones are creating issues of their own.CanadaMay 14, 2020
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China is still releasing banned ozone-killing chemicals into atmosphere: studyThe data reinforces a watchdog report from 2018 that claimed at least 18 companies in China were using the chemical to make foam insulation.EnvironmentMay 23, 2019
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Earth’s ozone layer is slowly healing, UN report saysA United Nations-backed report suggests the Earth's protective ozone layer is slowly recovering, due to lower concentrations of harmful greenhouse gases.EnvironmentNov 5, 2018
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China is leaking banned, ozone-killing chemicals: watchdogChinese foam-makers appear to be the “mystery” polluters behind the use of a banned, ozone-depleting chemical, an environmental group says.EnvironmentJul 9, 2018
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Someone is leaking a banned, ozone-killing chemical into the airA mystery polluter is producing a banned chemical that destroys the ozone layer, although scientists aren't sure where it's coming from or who is responsible.EnvironmentMay 17, 2018
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Ozone hole recovering thanks to Montreal Protocol, NASA saysThere’s concrete proof that the hole in the ozone hole is recovering, NASA scientists say.EnvironmentJan 6, 2018
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McKenna says amendment signed to Montreal ProtocolThe Montreal Protocol was an international agreement signed on Sept. 16, 1987.PoliticsNov 20, 2017
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Four new gases found in ozone layerNew research has found four new gases in the atmosphere that could potentially contribute to the depletion of the ozone layer -- and their source is unknown.EnvironmentMar 10, 2014
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