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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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Methane is both a potent greenhouse gas and an important precursor to ground-level ozone. Ozone, a key component of smog and also a greenhouse gas, damages crops and human health. In addition, they darken ice and snow, reducing their reflectivity and hastening global warming. Shindell et al., Supplementary material. 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. Comparison of Hg emissions in 2005 and 2010, by selected sector and region.

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