When the streets of Los Angeles flooded with rain last week, some of the city’s residents found themselves feeling sorry for a peculiar object: a food delivery robot floundering in water and debris.

Cornell researchers in physics and engineering have created the smallest walking robot yet, and its tiny size is only a side-effect. Controlled by magnets and small enough to diffract visible light, ...

When a robotics pioneer who has spent decades building humanoid machines recommends that you stand at least nine feet away from any full-size walking robot, you should probably listen. “My advice to ...