While 3D printing might be all the tech geek rage right now, the cooler story is what some people are doing with it to make an actual difference. We’ve seen stories of medical uses such as new 3D-printed limbs and that’s incredible but USC professor Behrokh Khoshnevis has just blown my mind.

Imagine 3D printing on such a large scale, using a concrete-style material, that could “print” a house in as little as 20 hours. Oh, and that material can withstand over three times the PSI force of standard concrete walls. There can even be larger versions, with multiple “print heads” for use in construction of multi-family dwellings like apartment complexes.

Professor Khoshnevis’ TEDx talk goes into more detail, so take a few minutes out of your day to appreciate science.

A bit less ominous than 3D-printed guns

h/t to Sofa_King_Cool via Reddit