The fifth edition of the Global Environmental Outlook (GEO-5) was published on June 6, 2012. This United Nations Environment Programme (UNEP) report indicates that the Montreal Protocol has been very effective in elimination the use of Ozone depleting substances. The world has nearly eliminated the production and use of ozone depleting substances, under the Montreal Protocol.
It is estimated that implementation of the Protocol will result, in the United States alone, in 22 million fewer cases of cataracts in people born between 1985 and 2100, and 6.3 million fewer skin cancer deaths by mid-century.
While further expansion of the Antarctic ozone hole has been halted, full recovery is not expected until mid-century or later. One group of ozone replacement chemicals – hydroflurocarbons (HFCs) – still needs to be phased out due to the fact that they contribute to global warming.
The full report (pdf) is downloadable here.
© 2012, Richard Matthews. All rights reserved.
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