Swiss pilot Raphael Domjan has set a new altitude record for solar-powered electric planes. His SolarStratos aircraft soared to 31,237 feet (9,521 meters). The team announced the achievement on ...

Swiss eco-explorer Raphaël Domjan is one step closer — or around 31,200 feet — to the stratosphere. The adventurer's ride there was much different from airliners that typically travel at that height.

Have you ever imagined a drone that could fly indefinitely, powered only by the sun? It sounds like something out of a sci-fi movie, but it’s now a reality. By harnessing the power of renewable energy ...