Motor made from bacterial parts is one of the smallest ever made

A living motor made from different parts of a bacterium is one of the smallest ever created and could one day power small robots.

Many types of bacteria are propelled by natural motors that rotate tail-like flagella. These rotary pumps, known as stators, are among the world’s oldest and smallest wheels and are thought to have evolved billions of years ago.

All bacterial species are equipped with this type of pump…