And second , if 3-D printers could be used to create a neighborhood of full-sized , detached single family homes in less time and money than it would conventionally take , could 3-D printers help end homelessness ? A company in China reportedly used 3-D printers to make 10 houses in a day . Sally Kohn : 3-D printers have potential to address problems like hunger , pollution . She says scientists are even experimenting with printing human tissues , organs . The U.S. is the world's largest producer of 3D printers. Millions worldwide can benefit from 3-D printed houses or foods .
A company in China reportedly used 3-D printers to make 10 houses in a day . Sally Kohn : 3-D printers have potential to address problems like hunger , pollution . She says scientists are even experimenting with printing human tissues , organs . The U.S. is the world's largest producer of 3D printers. Millions worldwide can benefit from 3-D printed houses or foods .