Scientists have built a robotic stingray made of heart muscle cells from a rat, a skeleton of gold, plastic fins, and light-activated algae proteins. The tiny, 16-millimeter-long robots take about a week to make and can be controlled with light. Anthony and Jeff discuss the nature of abominations, and try to decide if this qualifies as one.

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Today’s story was sent in by Tom Merritt: https://www.technologyreview.com/s/601834/robotic-stingrays-made-with-rat-heart-algae-and-plastic-fins/

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