TechnologySolar-powered Plane Readies for FlightSolar-powered Plane Readies for FlightThe Associated PressSolar-powered flight is a step closer to reality. A group of Swiss adventurers are hard at work on the Solar Impulse, a zero-emission airplane powered entirely by the sun. (May 22)Solar-powered flight is a step closer to reality. Several Swiss adventurers are hard at work on the Solar Impulse, a zero-emission airplane powered entirely by the sun. They promote renewable energies as they push technology to new limits. Testing on the aircraft is being conducted with computer simulations. And pilots are able to maneuver it in a variety of environments - including night flight - a considerable challenge for a plane powered by sunlight. The plane itself is little more than a giant wing - a giant array of solar cells - and a tiny compartment for the pilot. [Notes:SOT Andre Borschberg, pilot]"TODAY WE CAN TRANSPORT ONE PERSON WITH RENEWABLE ENERGY, AND OF COURSE WE HOPE IN THE...