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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. In addition, they darken ice and snow, reducing their reflectivity and hastening global warming. Source: Shindell et al. Click to enlarge. 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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The United Nations Environment Programme (UNEP) estimates that 1,960 tonnes of mercury arising from human activities are currently emitted annually into the atmosphere, generated mainly by artisanal and small-scale gold mining (ASGM)—the largest single anthropogenic source globally—and coal- or lignite-fired power plants.

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