Ozone layer 'rescued' from CFC damage
A steady decline in the levels of ozone-harming CFCs in the atmosphere has resumed, scientists say.
from BBC News - World https://ift.tt/2Nhx2hf
https://ift.tt/2Nhx2hf
from BBC News - World https://ift.tt/2Nhx2hf
https://ift.tt/2Nhx2hf
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