Two wires called "travelers" connect the first switch to the second one. Then power leaves the second switch to go to the light. No matter which switch you flip, the light responds. You may find ...

Scientists have created a new type of soft robot that can carry cargo through the air by moving along thin wires or ...

Researchers have created a light-powered soft robot that can carry loads through the air along established tracks, similar to ...

Engineers reveal a soft ring robot powered by infrared light that can climb a wire like a cable car but without any wheels.