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Solar-powered planes still a long way from carrying passengers

The Solar Impulse 2, a zero-fuel aircraft, has completed a three-day journey across the Pacific Ocean, but electric flight may still be among the technologies that are furthest from becoming practical.


BERTRAND Piccard made headlines last Saturday when he glided a solar-powered plane onto Moffett Airfield in California after a three-day journey across the Pacific Ocean. It's the most recent stop in an around-the-world trip that began in Abu Dhabi last spring and is intended...