Microscopic robots are learning to walk 🤖➡🏃 Researchers have created a microscopic robot that scurries forward when lasers hit its back. The lasers trigger different sets of platinum legs — each only a few atoms thick — causing the robot to “walk” with precision-engineered flexes. It’s not fast (yet), but that’s not the point. This is proof that light-controlled robots the size of microbes are possible — and mass-producible. One day, these tiny machines could crawl through your bloodstream loo