Delivery drones: the battle for airborne supremacy heats up

The race for delivery drones is gathering speed. Walmart, Amazon, Uber and DHL are among the companies aiming to get items to people more quickly and cheaply, especially in traffic-congested cities. They’re testing various different methods of delivery, yet all face similar obstacles. These include noise pollution, terrorism concerns, inclement weather and the increasing risk of mid-air collisions.

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