>>> (hole in the ozon layer)
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>>What about it?
>
>It was said in the 90-ties that hole in the ozon layer would eventually grow to span the whole earth and it would be catastrophic for the rest of the world. As always with these things, there are multiple factors involved. CFC's are one factor, but the extremely cold nature and vortex winds on the antartic another. That is the reason why it occurs mainly there.

You say it as if there were not actions taken to remediate the issue i.e. the Montreal Protocol.

>
>Again doomsday was predicted, but nowerdays nobody sees the hole in de ozon layer at the antartic as a real problem or threat. In fact there are signs it is recovering rapidly.

That is not true, Ushuaia (the Southernmost city in the world, in Argentina) takes weekly measures of the size of the ozone layer "hole" and 2011 marked the end of four years of declining hole area.