Solar's longest journey – the first round-the-globe PV-powered flight
As joy flights go, few would beat the first round-the-world journey by a solar-powered plane, the Solar Impulse 2.
"The more I fly, the more energy I have in the batteries," Bertrand Piccard told Fairfax Media this week, as he flew solo during the sixth leg of the global voyage, between the Chinese cities of Chongqing and Nanjing. "The sun is enough to make this fly forever – you never need to refuel, so it's a fantastic feeling."