According to The Guardian, A single gallon of fuel in the war zone can cost as much as $100. The study was "motivated by the high costs -- as well as the risks to troops of getting oil and water to combat zones. For land-locked Afghanistan, the nearest port at Karachi in Pakistan is more than 400 miles away from marine bases, and maintaining those long supply lines has become an increasingly dangerous proposition." Military bases inside the U.S. are already working to lower their use of fossil fuels by exploring the use of renewable energy sources to provide electricity. Read more and comment with Al Gore