Firms are working to make the motors that drive robots more efficient and cheaper.

Robots are being put through all kinds of abuse these days. They’re being kicked, punched, shoved, and even dragged by a chain around their neck — all in an apparent effort to teach them how to adapt ...

Researchers have succeeded in developing the smallest fully autonomous robot in history. It measures less than 1 millimeter and can swim underwater for months powered only by light.