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Airplanes of the future may not look like something out of the "Jetsons" or "Star Trek," but they'll be powered by anything from vegetable oil to algae.
"We can't put in long extension chords for electric powered airplanes," says Bill Glover, environmental strategy chief at Boeing [BA 36.48 -1.84 (-4.8%) ]. "We've got to be able to use liquid fuel with very high energy content."
The alternative jet fuel sector right now is a competitive one with various technologies under development and even with an economic slowdown and lower oil prices, airlines, engine makers, chemical companies and governments are working quickly to address supply needs.
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