Three decades after a treaty to phase out the use of chemicals known as CFCs, there are indications that the hole in the ozone layer is healing. Link to original: Ozone Hole Shows Signs of Shrinking, Scientists Say ; ; ;
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Three decades after a treaty to phase out the use of chemicals known as CFCs, there are indications that the hole in the ozone layer is healing. Link to original: Ozone Hole Shows Signs of Shrinking, Scientists Say ; ; ;
From: