A solar-powered airplane has taken off from Northern California on the first leg of a planned journey to several U.S. cities. The Solar Impulse left Moffett Field in Mountain View just after dawn. ... more 
A solar-powered airplane has taken off from Northern California on the first leg of a planned journey to several U.S. cities. The Solar Impulse left Moffett Field in Mountain View just after dawn. (May 3) less 
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Fri, May 3, 2013 5:30 PM EDT