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Piccard unveils Solar Impulse

An interview with Swiss adventurer, Bertrand Piccard, just after the unveiling of the Solar Impulse, the first aircraft designed to fly day and night on solar energy alone. It was round-the-world balloonist Piccard who spearheaded the project. (Isobel Leybold-Johnson & Julie Hunt, swissinfo.ch) 

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SWI swissinfo.ch - a branch of Swiss Broadcasting Corporation SRG SSR

SWI swissinfo.ch - a branch of Swiss Broadcasting Corporation SRG SSR