NZ 747 goes biofuel

By now you've heard of -- and maybe even met -- those tinkerers who get their cars up and running on vegetable oil, often using waste oil from fast food joints to tool around town. New Zealand, which is working hard to cut down its carbon emissions, has gone one better, developing a jumbo jet engine that can run partly on biofuel. No word on whether the odor of french fries drifts deliciously down on the cities below. Keep reading...

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