By Cat DiStasio
When it comes to construction, technology can go a long way toward making building projects faster, more economical and safer. Robots that can alleviate back-breaking manual labor and cut down on injuries are a welcome addition to work sites, and they can do everything from building a brick home to constructing a steel bridge. Other cool machines have been engineered to help those in need, like a 40-foot-tall 3D printer that makes mud houses for developing nations. With so many complicated tasks in the construction world, it's amazing to think about how machines can help us do them better, more powerful and often more eco friendly.