Morphing wings allow drones to keep flying through midair collisions
Japan's maglev train breaks world speed record
Where will the world live in 2050?
Solar plane stops in China
Solar airplane departs Myanmar for China
Live update on Germanwings plane crashed in France
Driverless car starts cross-country road trip in US
World solar plane bid starts next leg
Cambodia's solar-powered tuk-tuk deployed to fight air-pollution