Professor Behrokh Khoshnevis from The University of Southern California is testing a process called Contour Crafting, which is a way of 3D printing homes. It's basically a robot that extrudes concrete to provide the frame for a building. The process begins by printing hollow walls that are then filled with a solid wall of concrete for maximal structure. From there, human workers complete the home by hanging doors, installing windows, laying flooring, etc...

Check MSN's article for a better overview. Freshome's article includes Dr Khoshnevis' TEDx video.

Too many future visionaries depict a future full of clean energy and cleaner air. It's as if our need for clean air makes us willing to ignore the development and natural resource costs associated with powering all of these high-energy devices we keep adding to our lives. I'm beginning to believe most of us have certain fears which keep us from crossing a line where everything crashes into a horrific vision where every breath has a painful consequence.

Minimaforms presented Petting Zoo, an interactive display designed to respond to human touch and movement. Using a Kinect camera and software designed to respond with emotions, the exhibition provided three "pets" with three different patterns of responses and a basic machine learning allows each to develop behaviors based on input from the situation.