Ko Je-sung, a professor of Ajou University, shows a miniature robot called Rhagobot, modeled after the movement of Rhagovelia, a genus of water strider insects, during a press conference at the ...

Imagine a tiny robot, no bigger than a leaf, gliding across a pond’s surface like a water strider. One day, devices like this could track pollutants, collect water samples or scout flooded areas too ...