Facebook has completed a second test of a solar-powered drone -- called Aquila -- designed to bring internet access to remote parts of the world. From a report: Facebook plans to develop a fleet of drones powered by sunlight that will fly for months at a time, communicating with each other through lasers and extending internet connectivity to the ground below. The company called the first test, in June 2016, a success after it flew above the Arizona desert for 1 hour and 36 minutes, three times longer than planned. It later said the drone had also crashed moments before landing and had suffered a damaged wing. 查看全文>>