Solar Impulse, a solar-powered airplane crafted by Swiss researchers, has completed its first manned flights. Pilots Bertrand Piccard and André Borschberg each completed 25-hour single-person manned flights earlier this month. The Solar Impulse uses no fuel and creates no emissions. According to their website, they plan the first night flight in 2009, the first trans-Atlantic flight in 2011, and then the first round-the-world flight.
