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Solar Plane Prepares for Global Circumnavigation

Pilots of the sun-powered plane Solar Impulse 2 completed two successful test flights Thursday in the United Arab Emirates, in preparation for the first attempt to fly around the world. Officials say the plane performed flawlessly and that, weather permitting, it may start its journey as soon as March 3. A test pilot took Solar Impulse 2 on its first flight, which lasted four hours. Then, project co-founder Andre Borschberg took off and stayed in the air for a full day. These test...

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