Before the Predator attached the name "drone" to an anti-terror war machine, many militaries flew unmanned planes as targets, so that pilots and anti-aircraft gunners could practice shooting moving objects. Target drones are still flown today, both specific target models and ones converted from old jets specifically for this purpose. In the past, targets were generally plane-sized, and militaries used anti-aircraft weapons to shoot them down.
These DNA machines (or origami robots, so-called since they can unfold and deliver drugs stored within) carry fluorescent markers, allowing researchers to tell where in the roach's body they are traveling and what they are doing. Incredibly, the "accuracy of delivery and control of the nanobots is equivalent to a computer system," New Scientist reported.
There are generally threeways to improve an explosive weapon: make the explosion bigger so it's guaranteed to hit the target;improve its precision so that it doesn't hit anything but the target;or shapethe explosion so that when it goes off,it travels in a specificdirection. Over the past12 years, as the major war effortof both the United States and the United Kingdom has been fighting small groups of insurgents that operate in civilian areas, weapons engineers placed aheavy emphasison the latter two strategies.
Looking back, Google’s emergence as a robotics powerhouse seems obvious—and inevitable. First came the scattered hires of roboticists and the release of self-driving cars into Bay Area traffic. Then, the search giant reportedly bought two humanoid HUBO robots from South Korean university KAIST. But it wasn’t until December’srevelation that Google had acquired eight robotics companies—including Boston Dynamics, maker of BigDog, WildCat and a stableof other astonishing Pentagon-funded bots—that it became clear: Google means to build robots.