Guardian: The creators of the world's first solar-powered plane have announced it will fly across the United States in a coast-to-coast showcase of the experimental technology.
The Solar Impulse, which has a wingspan longer than a Boeing 747 but weighs less than a car, is due to take off from San Francisco in May and spend two months hop-scotching across US cities until ending its tour in New York in July.
The announcement was made on Thursday at a news conference at Moffett airfield, near San Francisco....