According to the United Nations, by 2050, there will be 9.2 billion humans on Earth. It's getting really crowded, and frankly, there may not be enough room. An industrial engineering professor from USC thinks he's figured out how to house the new 2 billion plus residents.

Professor Behrokh Khoshnevis has come up with a 3D printer concept. It is a massive 3D printer that can print an entire 2,500 square foot home in just 24 hours. It consists of two crane like arms and a crossbeam housing the printhead. It can print super quick drying cement, and it would be capable of completed a two story building in under a day.

The home won't be completed using the 3D printer on its own. Workers will still need to prep the space where the 3D printer would sit, and they will still have to lay down the foundation. Window head jambs and metal ceiling between floors would have to be laid by hand or by cranes.



Pretty impressive. Is this better than prefab? What do you think? Check out the video below:

[Contour Crafting, via SlashGear]