ScienceDaily: The first comprehensive analysis of air emissions associated with natural gas and oil production in the Barnett Shale area finds that emissions can be a significant contributor to Dallas-Fort Worth smog formation, comparable to the combined emissions from all Metroplex cars and trucks. In addition to emissions of smog-forming compounds, such as nitrogen oxides and volatile organic compounds (VOC), the report also considers air toxic chemicals and greenhouse gases. Emissions of carbon …