Solar Impulse completes its round-the-world journey
It flew more than 40,000 km over the last 15 months or so, powered only by the sun.
Solar Impulse 2 starts the last leg of its round-the-world flight
The solar-powered aircraft will complete its trip almost a year and a half after the journey began.
ICYMI: Bubba Watson builds a jetpack, Facebook flies its solar drone
Plus, all the headlines you were too busy to hear the first time.
The best portable solar battery charger
When you're off the grid, be sure to pack the Anker PowerPort Solar Lite.
Harvard's battery tech takes cues from vitamin B2
They only had to make a couple of tweaks to the original B2 molecule.
Mandalay Bay installs America's biggest solar roof
Solar aircraft test flight paves the way for internet drones
Luminati Aerospace wants robotic aircraft that never land.
Solar-powered aircraft completes its flight across the US
Solar Impulse 2 landed this morning in NYC, the final US leg of its round-the-world journey.
Artificial 'leaf' could beat real plants at converting sunlight
Who knew that the future of energy would look so plant-like?