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Images: Flying on a wing and a battery

May 1, 2008 2:32 PM PDT
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Lange Aviation and the German Aerospace Center are working to develop a hydrogen-fuel-cell-powered aircraft, the Antares DLR-H2. But fuel cell planes likely remain far in the future.

For now, engineers are focusing on improving existing battery systems. Innovations are likely to come from the automotive industry's work building efficient cars, such as plug-in hybrids.

Photo by Dave Nadler/Lange Aviation

Caption by Elsa Wenzel

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