The last of four “green” flights arrived in Sydney from Abu Dhabi at the weekend. The Virgin Australia flight was the capstone of an experiment in increasing fuel efficiency. Department of Transport officials said that rather than use new technology, the green flights between the Emirates and Australia calculated the most fuel-efficient routes, even as the aircraft were in the sky. “This is achieved through close co-operation between air traffic control, the airport operator and the airline,” a department official said. Read More