Amazon noted in its latest patent that its customers "may be alarmed or confused" when one of its noisy delivery drones approaches their house. With that in mind, the company proposes fitting its drone with lights, speakers, and even a projector to help the flying machine communicate with the customer.

Nationwide is getting into the drone business. The insurer said on Tuesday that it has bought a stake in Betterview, a 4-year-old San Francisco-based