The U-Safe self-propelled buoy saves drowning swimmers so you don't have to

The most dangerous aspect of a water rescue for first responders isn't the treacherous environmental conditions, it's the terrified and panicked victim capable of pulling their rescuer under the waves along with them. Rather than risk national treasures like David Hasselhoff, the U-Safe self-propelled buoy from Portugal's Noras Performance will brave the waves in their stead. Andrew Tarantola / Engadget The U-Safe is an aquatic robot designed to drive out to a swimmer in distress using a pair of...