I remember in the 80s and 90s all the talk about the ozone layer, and the move away from stuff with CFCs. At the time I was just a child, not fully aware of the magnitude of what was going on.
Now, looking back, I am in awe, that the world was able to recognise there was a threat to society's ongoing existence. And work together to instigate world wide change. The Montreal protocol is ratified by 198 UN members.
And now, 28 years after it was signed...
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