Watch A Solar Plane Fly Over Milan Countryside [Video]

Airplane wings are broad, flat surfaces that almost always face the sky, which means they are ideal mounts for solar panels. Built by Solar Flight, a team of European engineers, the Sunseeker Duo is a two-seater airplane that flies purely by solar power. On December 17, 2013, it completed its first flight powered solely by its own battery. Earlier today, Solar Flight released video of that flight. The airplane has the lithe profile and shape more commonly associated with an unpowered glider, and...