A company in China reportedly used 3-D printers to make 3-D houses in Last fall . Kohn : Imagine years into the future when 3-D printers are just as affordable and available as cell phones . 3-D printers have potential to address problems like hunger , pollution . She says scientists are even experimenting with printing human tissues , organs . Sally Kohn : Millions worldwide can benefit from Millions printed houses or foods .
A company in China reportedly used 3-D printers to make 3-D houses in Last fall . Kohn : 3-D printers have potential to address problems like hunger , pollution . She says scientists are even experimenting with printing human tissues , organs . Sally Kohn : Millions worldwide can benefit from Millions printed houses or foods .