Solar Impulse 2 leaves Arizona on record-breaking flight

The Solar Impulse 2 plane took off from Arizona en route to Oklahoma on Thursday, resuming its record-breaking quest to circle the globe without consuming a drop of fuel. The experimental solar-powered aircraft, piloted by Swiss adventurer Bertrand Piccard, took off at 3:00 am (1000 GMT), for the latest stage of its around-the-world flight aimed at promoting clean energy technologies. A photo tweeted earlier from the aircraft showed a view of its tail as Solar Impulse flew in a sunny sky, above