A company in China reportedly used 3-D printers to make 10 houses in a day . Karen Kohn : I understand stem cells even less than I understand 3-D printing , so I 'm not going to say much here except to note that scientists are experimenting with what seems to be impossible but apparently is n't : printing human organs . 3-D printers have helped to address problems like hunger , poverty . She says scientists are even experimenting with printing human tissues , too . Others : Millions worldwide can benefit from 3-D printing houses or foods .
A company in China reportedly used 3-D printers to make 10 houses in a day . Karen Kohn : 3-D printers have helped to address problems like hunger , poverty . She says scientists are even experimenting with printing human tissues , too . Others : Millions worldwide can benefit from 3-D printing houses or foods .