Press The study has been three years in the works. Stolaroff and his colleagues looked at the impact, in terms of emissions, between delivery by quadcopter and delivery by diesel trucks. They found that within the average 4km (2.5 mile) range that today’s delivery drones are capable of, aerial delivery used less energy per package and per kilometer than trucks. The caveat: that was the case for light deliveries weighing 0.5kg (1.1lb) and under.
Source: Exploring the Environmental Benefits of Delivery Drones – DRONELIFE
