US sends futuristic plane back into space By AFP | AFP

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http://uk.news.yahoo.com/us-launch-anew-secretive-space-plane-235102518.html

SUGAR Volt: Boeing's Hybrid Electric Aircraft

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http://www.youtube.com/watch?v=oz3tzG9RxKI&feature=relmfu

Liquid Air Could Be The Fuel Of The Future

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http://uk.finance.yahoo.com/news/liquid-air-could-fuel-future-035017019.html

The future of flight : Next generation of air travel

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http://in.news.yahoo.com/photos/the-future-of-flight-next-generation-of-air-travel-slideshow/the-future-of-flight-photo-1345087672.html