A solar-powered aircraft which one day hopes to circle the globe has started a 24-hour test flight in Switzerland.
Solar Impulse took off shortly before 5 am GMT, Wednesday from an airfield in Payerne, 80 miles northeast of Geneva.
The plane is being piloted by Andre Borschberg who will fly the plane to a height of nearly 28,000 feet (8,500 meters) throughout the day.
Full story: Solar-powered plane takes 24-hour flight – CNN.com