Drones are controversial. After proving their prowess against al Qaeda, they’re poised for takeoff in American airspace: patrolling borders, dusting crops, and tracking perpetrators. But how safe are they? And what will they mean for our privacy and civil rights? A March story in National Geographic considered the issue, with a photo gallery – including this shot of robo-wings being tested in an Air Force lab – that illustrated new advances in drone technology. (Photo by Joe McNally/National Geographic)
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