Solar-powered plane begins last leg of record voyage

CBS/AP - An experimental solar-powered airplane took off from Cairo for Abu Dhabi early Sunday on the last leg of its globe-circling voyage, mission organizers said.The Mission Control Center tweeted that the Solar Impulse 2 is expected to land in Abu Dhabi after a 48-hour flight. Mission Control said it had identified a weather window that could allow the plane to overcome the challenging high temperatures across Saudi Arabia."Just took off from Cairo to achieve the 1st round-the-world solar fl