I looked over my shoulder, trying to avoid direct eye contact. A chill went down my spine as I walked near a marina in Berkeley, Calif. on a warm sunny day. I checked again, but couldn't figure out ...

With any luck, at least for its more than 5,000 Indiegogo backers, the Onagofly smart nano drone will succeed where the Zano nano drone failed. Like that mini quadcopter, the Onagofly is controlled ...