Scientists assess hemispheric pollution risks

Scientists from Europe, north America and Asia met in Germany last week to discuss the extent and nature of global transport of pollution. So called hemispheric pollution is on the rise, they agreed, in particular of ozone, fine particles and of mercury and persistent organic pollutants. Organised in the framework of the UN convention on long-range transboundary air pollution, the session reflects growing concern that many air pollution problems increasingly require hemispheric and even global responses. See UN economic commission for Europe press release.

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