GRAIN-SIZED FLYING MICROCHIPS MONITORING US
It’s neither a bird nor a plane, but a winged microchip as small as a grain of sand… The tiny microfliers…are being billed as the smallest-ever human-made flying structures… The devices don’t have a motor; engineers were…inspired by the maple tree’s free-falling propeller seeds…[E]ngineers optimized the aerodynamics…so that “as these structures fall through the air, … Continued