Grown inside 3D-printed molds: new ears for children

For the first time, scientists in China have created new ears for five children using their own cells grown in a 3D-printed mold.All five kids, between the ages of six and nine, were born with one underdeveloped ear, a condition called microtia. Though kids with microtia do tend to have hearing loss in their deformed ear, most of the time they can hear fairly well out of the other one. So, the new ears were grown for cosmetic reasons. First, the scientists made a 3D-printed model of the childre