An entire home can potentially be built in a day using a 3D printer. A revolutionary technology initially developed to build emergency housing, Contour Crafting has NASA excited. And it may one day build biospheres on Mars.

Right now the technology uses concrete to build its homes, but concrete would be extremely costly and heavy to transport to Mars. The solution? Martian soil. Check out this extraordinary technology and its potential in this video:

Image credit: Kevin M. Gill/Flickr