China has quietly turned a childhood toy into a piece of heavy infrastructure, unveiling a giant power-generating kite that ...

Any kid who’s ever flown a kite has learned the lesson: Once you can get the kite off the ground and high into the air, you’re more likely to find a steady breeze to keep it aloft. A fledgling wind ...

Airborne kites harness high-altitude wind with advanced flight control, producing predictable electricity for renewable grids ...