We're about to hear a lot more about medical 3D printing in space, as news sources are reporting that an experiment to 3D print living tissue on the ISS is in the early development phases at Russian space agency Roscosmos, also known as the Roscosmos State Corporation for Space Activities. 3D printing living tissue is extremely difficult, and this difficulty grows exponentially when you add the vacuum of space and a zero gravity environment to the equation. Read more at 3DPrint.com: https://3dprint.com/160045/roscosmos...tissue-on-iss/