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Montreal Protocol To protect the ozone layer, the Vienna Ozone Layer Protection Agreement was first signed in 1985, but no time limit could be fixed for the implementation of its provisions. On 16 September 1987 in Montreal, Canada, under the auspices of the United Nations, an agreement was signed between different countries, called the Montreal Protocol, to address the concerns arising out of the depletion of the ozone layer. The Montreal Protocol came into force on January 1, 1989. In the Montreal Protocol, it was decided that by the year 2050, the production of elements that damage the ozone layer would be controlled. It was also decided in the conference that the production and use of gases like chlorofluorocarbons, which destroy the ozone layer, would be limited. A 'MOP' (Meeting of Parties) is held every year by the member countries for the practical implementation of this protocol. The Montreal Protocol has been signed by 197 world parties. India has also signed this pro...