This genetically engineered ‘living robot’ moves with rat heart cells

http://www.extremetech.com/wp-content/uploads/2016/07/stingray-head-768x424.jpg 768w, http://www.extremetech.com/wp-content/uploads/2016/07/stingray-head-640x353.jpg 640w, http://www.extremetech.com/wp-content/uploads/2016/07/stingray-head-672x371.jpg 672w, http://www.extremetech.com/wp-content/uploads/2016/07/stingray-head.jpg 1344w" sizes="(max-width: 300px) 100vw, 300px" />A robot stingray powered by living muscles isn’t just an achievement in stingray biology and genetic engineering — it could be a tool for heart research as well.