French skipper Gerard d'Aboville and captain of The Turanor PlanetSolar, poses on 

French skipper Gerard d'Aboville and captain of The Turanor PlanetSolar, poses on the world's largest solar boat, in Paris, Tuesday, Sept. 10, 2013. The PlanetSolar with its 537 square meters of photovoltaic panels powering 6 blocks of lithium-ion batteries, accomplished the first around the world trip powered only by solar energy in May 2012. (AP Photo/Christophe Ena)
Associated Press
French skipper Gerard d'Aboville and captain of The Turanor PlanetSolar, poses on the world's largest solar boat, in Paris, Tuesday, Sept. 10, 2013. The PlanetSolar with its 537 square meters of photovoltaic panels powering 6 blocks of lithium-ion batteries, accomplished the first around the world trip powered only by solar energy in May 2012. (AP Photo/Christophe Ena)
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