One institution that always seems to be right in the thick of the latest 3D printing innovations is MIT, and its materials science and design Mediated Matter group, which focuses on nature-inspired design and design-inspired nature. The research group recently took on a large project: creating a large, autonomous robot that constructed an igloo-like building half the diameter of the dome in the US Capitol, in less than a day. It's called the Digital Construction Platform (DCP), an experimental enabling technology for large-scale digital manufacturing, and is made up of a large, hydraulic arm on top of motorized treads. Read more at 3DPrint.com: http://3dprint.com/172651/mediated-matter-robot-dome/