As Solar Impulse flies over the Mediterranean Sea, it is about to start the final leg of its journey around the world without any fuel. From left, Solar Impulse pilots and co-founders Bertrand Piccard ...
Beijing: In a rare test of man and machine, The Solar Impulse 2, the world's only solar-powered aircraft is about to undertake its greatest challenge yet - to fly non-stop for six-days from China to ...
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