Having a roof over your head  a basic human need, but there are 1.2 billion people in the world without adequate housing. This may  thanks to a revolutionary, low-cost use of 3D printers to  houses. With 3D printing, materials are  together or reinforced by  a computer-controlled device to  a three-dimensional object. Two companies have joined forces to try and  homelessness around the world by building affordable homes using 3D printing. Tech company ICON has  a method for  a one-floor, 60-square-meter house out of cement in a day for just $10,000. This is a fraction of both the time and cost  to build a similar construction using conventional methods.
ICON has  up with the non-profit, international housing organization New Story. Together, they will  building homes in developing countries. Their joint venture will  100 new homes  in El Salvador next year. New Story's co-founder Alexandria Lafci  that the 100 homes were just a drop in the ocean. She said: "There are over 100 million people  in slum conditions, in what we call survival mode." She also  possibilities for 3D-printed houses to  common in richer countries in years to . However, she said that for the moment: "The tech is ready now to  very high-quality, safe homes in the places we're building."