British scientists made a breakthrough this week by developing the world’s first mini-liver. It was created using stem cells from umbilical cord blood in a machine used by NASA, which speeds up cell growth because of near zero gravity. The livers will be used by pharmaceutical companies to test new drugs, avoiding the need for both human and animal testing. In addition the small sections of liver could be used to treat patients in the next 10 to 15 years. Good news for anyone suffering from liver problems.