Link: http://www.yourdestinationnow.com/2021/09/winged-microchip-size-of-grain-of-sand.html
Microchip size of a grain of sand smallest human-made flying structure created, Developers say it could track airborne disease. Could be used to monitor air pollution and environmental contamination. .No motor involved, device works like seeds of a maple tree, catching wind as it glides towards the ground. The devices fitted with air pollution sensors, tools to study solar radiation, PH sensor to monitor water quality..Has power sources, antennas for wireless communication and embedded memory to store data, Started as a electronic system packed with sensors, and made to fly.
LITTLE BROTHER IS WATCHING YOU TOO