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People descovered that the loss of the ozone given by the reaction was too slow.
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The Ozone was first noticed in Anartica.
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Two chemists predicted that chemicals would seriously damage the ozone layer.
Two chemists predicted that chemicals would seriously damage the ozone layer. -
The first measurement for the Ozone
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In Montreal people created the world's first environmental convention.
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A team later returned from the Antarctic to reveal the cause of the ozone hole which was human-produced chlorine and bromine molecules escaping to the stratosphere.
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A meeting in London voted for a strengthened Montreal Protocol under which CFCs, halons and other ozone-destroying chlorine compounds would be phased out by 2005 (most would be phased out by 2000).
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The ozone hole was the largest hole recorded.
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Around this time well be expecting the ozone hole to be destrorying.