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International study identifies 14 key measures to reduce methane and black carbon emissions; reduction in projected global mean warming of ~0.5 °C by 2050

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Circle areas are proportional to values for (A and B) climate change, (C and D) human health (values for population over age 30), and (E and F) agriculture. Their potential climate impact was assessed by using published global warming potential (GWP) values for each pollutant affected. Source: Shindell et al. Click to enlarge.

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Final session on international mercury convention this week expected to culminate in agreement; UNEP Global Mercury Assessment 2013 finds industrial source Hg emissions may be rising

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Unintentional emission sectors: Coal burning, ferrous- and non-ferrous (Au, Cu, Hg, Pb, Zn) metal production, cement production. Artisanal and small-scale gold mining and coal burning are the major sources of anthropogenic mercury emissions to air. Use of coal for power generation and industry is increasing, especially in Asia.

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