Bio-jetfuel takes to the skies as airplanes explore alternative energy sources like camelina and jatropha. However, all this innovation comes with a steep price tag: food. Someone has to grow all those useful fuel crops, and it's falling to third world farmers to shoulder the burden while production of edible foodstuffs declines accordingly. With most of the affected population unlikely to enjoy the benefits of green air travel, who will? The answer: Goldman Sachs. Read the latest on bio-jetfuel in this episode of "A Minute of Your Time."