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Civilian Drones Raise Hopes, Questions in Africa

African militaries want surveillance drones to help them patrol their borders and vast open spaces, but engineers and entrepreneurs say unmanned aerial vehicles could do so much more than just track the bad guys. They could deliver medicines, protect endangered species, and drive economic growth, with cargo drones moving goods quickly and cheaply. But some experts warn that opening up civilian air space to drones, even for such purportedly "good" uses, could create problems in the...

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