Devices: Artificial inspiration

S arah Gilpin is talking to a pair of opales-cent human lungs. " You guys are so cool, " she says, peering into a keg-sized glass bioreactor at Massachusetts General Hospital (MGH) in Boston. The lungs float inside, puffing up as 40 litres of soapy fluid is pumped through their network of blood vessels. Less than a week earlier, these lungs belonged to a 47… (More)