The Solar Impulse 2 taxis on the tarmac of al-Bateen airport in Abu Dhabi before taking off on March 9, 2015. United Arab Emirates (UAE) in a historic journey that is set to promote green energy. The aircraft called Solar Impulse 2 took off at 7:12 a.m. local time (0412 GMT) in the UAE’s capital, Abu Dhabi, on Monday and headed to the Omani capital city of Muscat as the first leg of its 12-leg...