Wind turbines usually jut up from the ground like giant pinwheels. Now a company in China is exploring a new form factor: flying wind turbines. These zeppelin-like aircraft float high in the sky, ...

High above the streets of Yibin City in southwest China, a helium-filled airship shaped like a streamlined Zeppelin has quietly become a functioning power plant. The S1500 system, described by its ...

Drones with propellers, for instance, are very agile and able to hover; however, they use up a lot of energy. Airplanes, on ...