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Article updated: 1/19/2013 8:26 PM

More than 140 nations adopt treaty to cut mercury

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A man helps put on a mask for an elderly passer-by while several foreigners hand out free masks to pedestrians without masks in an effort to promote public awareness to use masks for protection from polluted air in downtown Shanghai. Air pollution is a major problem in China.

Associated Press

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A new and legally binding international treaty to reduce harmful emissions of mercury was adopted Saturday by more than 140 nations, capping four years of difficult negotiations but stopping short of some of the tougher measures that proponents had envisioned.
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