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Tiny Robots and Sensors Need Tiny Batteries

Computers, sensors and robots as small as a grain of salt are being developed that can move around, detect light, sound, pressure, chemicals and magnetic fields. Less than a millimetre across and a few hundred micrometres thick, they process information and...

Fish Robots Form Schools Like the Real Thing

Seven little bluebots gently swim around a darkened tank in a Harvard University lab, spying on one another with great big eyes made of cameras. They’re on the lookout for the two glowing blue LEDs fixed to the backs and bellies of their comrades, allowing the...