Kittyhawk, the company named for the green hills where the Wright brothers made their first controlled winged flight, has struggled to get off the ground. Now it seems the folks behind the air taxi company are ready to throw in the towel, offering little fanfare while they dive their flightless...

Although most consumer-oriented drones are able to land themselves, their automated landing systems require a flat landing site, minimal winds, and low speeds to safely touch down. That’s not always available, so researchers have developed a new landing system that allows drones to land in...