Celebrations were held on Wednesday in Geneva to mark the 25th anniversary of the convention on long-range transboundary air pollution (CLRTAP). Coordinated by the UN economic commission for Europe (Unece), the treaty is credited with significantly cutting acidifying pollutants such as sulphur dioxide and nitrogen oxides. It now extends to ozone, heavy metals and persistent organic pollutants (POPs). In a related development, the European Commission has launched a public consultation on preparations for an EU action plan on air pollution it is due to publish next summer. See CLRTAP home page and Commission press release.
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