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The Editors

No, Really, How Do We Keep Robots From Destroying Humans?

In the demilitarized zone dividing North and South Korea, SGR-1 robots are on patrol, equipped with cameras and radar to detect intruders as well as speakers to warn them off. If that fails, they also carry machine guns and grenade launchers.

In the U.S., the Home Exploring Robotic Butler can retrieve a book from a shelf, a meal from a microwave or a drink from the kitchen. It can even separate an Oreo cookie.