Professor Behrokh Khoshnevis has been doing research into using 3D printing technology to solve world problems, particularly housing in emergency situations and low-income environments. Watch the video and learn where home-construction might be going in the not-too-distant future.
More information:
http://www.dailymail.co.uk/sciencetech/article-2187623/Contour-Crafting-builds-house-24-hours.html