Continental Airlines said a 90-minute test flight using biofuel achieved slightly better fuel efficiency than regular jet fuel. The biofuel, which was derived from jatropha and algae, was designed to lower greenhouse gas emissions. A consortium made up of Boeing, commercial airlines and engine makers have announced that tests performed in 2008 and early 2009 show that biofuels perform "as well or better" than petroleum-based jet fuel and improve the carbon footprint and efficiency of airplanes. Boeing plans to submit the results to an international standards body in the hopes that the fuel will be approved for commercial use in the near future.
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