The rise of 3D printers has been interesting. They've been praised for being able to build a house and simultaneously questioned for their ability to create weapon components. For one little girl, though, they stand for a second chance at a normal life.

3D printing seems to be everywhere these days, but usually it's just for making small machines or mechanical parts. Now a professor from the University of Southern California says that we need to think bigger, and has developed a system to print entire buildings in less than a single day.

The ability to print out your own 3D objects from open source schematics in your very home is absolutely the future. But technology enables all kinds of gray areas, such as people printing out homemade weapons. In this case, one guy managed to print himself parts for an assault rifle using a 3D printer. This article has been updated.

Even your most advanced toaster won't ask that much of you these days. No matter what you're browning, it all boils down to lowering that lever and knowing that something is about to get toasty. So, how do you make a complex piece of technology such as a 3D printer easy enough for everyone to use, like a toaster? Well, to start, you focus around a one-button design. There are 3D printers on the way that want you to be able to start fabricating cool stuff just like that — just with one button. For the most part, it really can be that easy. Here we preview 3D System's forthcoming Cube 3D printer, which is looking toward a nearer-than-you-think future where 3D fabrication is commonplace and something anyone can do.