National Geographic: Ready for some good news about the environment? Emissions of carbon dioxide in the United States are declining. But don't celebrate just yet. A major side effect of that cleaner air in the U.S. has been the further darkening of skies over Europe and Asia. The United States essentially is exporting a share of its greenhouse gas emissions in the form of coal, data show. If the trend continues, the dramatic changes in energy use in the United States-in particular, the switch from coal to newly abundant...
URL: http://news.nationalgeographic.com/news/energy/2013/03/130315-us-coal-exports/
Enclosure: http://images.nationalgeographic.com/wpf/media-live/photos/000/652/overrides/energy-united-states-coal-exports_65299_600x450.jpg
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