All they need to know is this is the coolest thing they'll see all year
July 7, 2016 6:54 PM Subscribe
This robot stingray is powered by genetically engineered rat heart cells. It has an elastomer body and a stiff gold skeleton. Rat heart cells are grown in a specific pattern on the underside, and are activated by pulses of light -- allowing the robot to be remote controlled as it navigates through a liquid with suspended nutrients that keep the cells alive. More details from Science. Even Popular Mechanics doesn't need to do much sensationalizing to this story.
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