Global commons recycling. The 1979 Convention on Long-Range Transboundary Air Pollution, or CLRTAP, is an early international effort to protect and gradually reduce and prevent air pollution. It is implemented by the European Monitoring and Evaluation Programme (EMEP), directed by the United Nations Economic Commission for Europe (UNECE). The Montreal Protocol on Substances that Deplete the Ozone Layer, or Montreal Protocol (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 numerous substances believed to be responsible for ozone depletion. The treaty was
Montreal Protocol (for example, in the past metered dose inhalers commonly used to treat asthma and chronic obstructive pulmonary disease were exempt) or Halon fire suppression systems used in submarines and aircraft (but not in general industry). The substances in Group I of Annex A are: The provisions of the Protocol include the requirement that the Parties to the Protocol base their future decisions on the current scientific, environmental, technical, and economic information that is assessed through panels drawn from the worldwide expert communities. To provide that input to the decision-making process, advances in understanding on these topics were assessed in 1989,