In this Dec. 25, 2015, file photo, pedestrians make their way across a busy intersection on a day with severe air pollution in Beijing. (AP Photo/Mark Schiefelbein, File)
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The production of goods for consumers in rich nations leaves a deep footprint in the form of potentially-dangerous nitrogen pollution in developing countries, a study said Monday.A study in the journal Nature Geoscience said many developed nations had a sky-high nitrogen pollution "footprint" – much of it left far away in the developing world.The study claims to be the first to trace the flow of nitrogen emissions along international trade routes.Based on a global trade database of 188 countries, the study showed the bulk of nitrogen emissions in 2010 came from industry and agriculture, which accounted for 161 teragrams (trillion grams), while 28 Tg was produced by consumers – mainly from sewage.
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