An Air Force simulation says researchers are at work on killer robots so tiny that a group of them could blend into a cityscape.
Science writer John Horgan's feature on the many ways drones will be used in coming years is interesting throughout, and terrifying in the passage where he describes an effort to build micro-drones that are, as the U.S. Air Force describes them, "Unobtrusive, pervasive, and lethal."
Air Force officials declined a request to observe flight tests at a "micro-aviary" they've built, he reported, but they did let him see a video dramatization "starring micro-UAVs that resemble winged, multi-legged bugs. The drones swarm through alleys, crawl across windowsills, and perch on power lines. One of them sneaks up on a scowling man holding a gun and shoots him in the head."