Synthetic Stingray May Lead To A Better Artificial Heart

Using gold, silicone and heart cells from a rat, scientists have made a tiny artificial stingray. The engineering involved in propelling it could help make a heart that's more than a mechanical pump.
Read more: http://www.npr.org/sections/health-shots/2016/07/07/484950849/synthetic-stingray-may-lead-to-a-better-artificial-heart?source=Snapzu