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Now, two professors at the University of Nebraska counter that gasoline is an even bigger source of heat-trapping gases than previously believed. While most attention focuses on the obvious sources of gasoline-related emissions — drilling wells, transporting oil, refining it into gasoline and finally burning it in a car engine — they argue that the military activity that goes into protecting and acquiring oil imports from the Middle East takes an emissions toll that doesn’t get factored into comparisons of gasoline and ethanol.

In a paper to be published on Tuesday in Environment Magazine, Adam J. Liska, whose specialty is industrial ecology, and Richard K. Perrin, who focuses on agricultural economics, write that fuel burned in warplanes and ships — and the carbon dioxide released in manufacturing those planes and ships — should be counted in gasoline’s total.

http://green.blogs.nytimes.com/2010/07/19/does-middle-east-oil-get-a-carbon-subsidy/

http://www.environmentmagazine.org/Archives/Back%20Issues/July-August%202010/securing-foreign-oil-full.html

http://bse.unl.edu/faculty/liska.shtml

http://www.agecon.unl.edu/facultystaff/directory/perrin.html