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World Ozone Day 2019: Why the world has celebrated Ozone Layer Preservation Day for 32 years and counting
World Ozone Day 2019: Dirty air from Gangetic plains, central India messing up the ozone neighbourhood
World Ozone Day 2019: 32 years of the Montreal Protocol, the ozone layer is still on the mend
World Ozone Day 2019: Exposure to ozone near the ground at low levels continues to affect heath
Ozone Preservation Day: Five questions you wanted to ask about the depletion of the Ozone layer
The Montreal Protocol reduced the use of ozone-depleting chemicals and will lead to the healing of the ozone layer.
