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Overview


The Montreal Protocol on Substances That Deplete the Ozone Layer (a protocol to the Vienna Convention for the Protection of the Ozone Layer) is an international treaty designed to protect the ozone layer by phasing out the production of a number of substances believed to be responsible for ozone depletion. The treaty was opened for signature on September 16, 1987 and entered into force on January 1, 1989, followed by a first meeting in Helsinki in May 1989. The United Nations General Assembly has designated September 16 as the International Day for the Preservation of the Ozone Layer. Since then, it has undergone seven revisions: in 1990 (London), 1991 (Nairobi), 1992 (Copenhagen), 1993 (Bangkok), 1995 (Vienna), 1997 (Montreal), and 1999 (Beijing). It is believed that if the international agreement is adhered to, the ozone layer is expected to recover by 2050. Due to its widespread adoption and implementation it has been hailed as an example of exceptional international cooperation, with Kofi Annan saying, "Perhaps the single most successful international agreement to date has been the Montreal Protocol." (From wikipedia.)

 

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