Easy to deploy, hard to detect, and it's still unknown who was behind the attacks. | Vocativ

These NASA engineers found a way to put out fires using sound waves! As the method, developed by Sonic Fire Tech, uses deep bass frequencies, too low for humans to hear, to literally shake the fire apart. The sound waves, officially called Infrasound pressure waves, knock oxygen molecules out of the way before the fire has a chance to use them for combustion. They can extinguish fires from up to 10 feet away, and even prevent fires from starting in the first place. They do require a special kind