September 16, 2012, is International Day for the Protection of the Ozone Layer, and this year it also marks the 25th Anniversary of the adoption of the Montreal Protocol on Substances that Deplete the Ozone Layer. The Montreal Protocol is dedicated to the protection of the earth's ozone layer which, in turn, protects life on earth from the sun's ultraviolet rays. With 197 nations party to the accord, the Montreal Protocol is the most widely ratified treaty in United Nations history and has, to date, enabled reductions of more than 97% of all global consumption and production of controlled ozone depleting substances (ODS). As a result of the Montreal Protocol, concentration of ODS in the atmosphere have begun to decrease.
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