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The U.S. Military Has Spewed $21 Billion in Emissions Since 9/11

  • About a third of that occurred in conflict zones, study says
  • Cutting emissions will lessen conflicts, author writes
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Global Emissions Soar
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The U.S. military is belching more global-warming pollutants than some industrialized nations, with about a third of its emissions occurring in major conflict zones such as Afghanistan and Iraq, according to a new study.

American armed forces -- with a globe-spanning array of bases, warships, planes and land vehicles -- are the world’s largest institutional emitter of greenhouse gases, topping countries including Sweden and Denmark, according to the study from Brown University’s Costs of War project. A spokesman for the Pentagon didn’t immediately return a request for comment.