Solar Impulse 2's Pacific crossing could begin as soon as Thursday
(Newser) -
Two months after beginning a 21,700-mile , round-the-world journey, the Solar Impulse 2 is about to embark on its toughest challenge yet: a Pacific Ocean crossing. While a typical aircraft can make the trip in 12 hours, the Impulse 2, which runs entirely on solar power and travels between 20mph...