There is a wave of new design coming and visionaries say it promises to be one of the most important technological advances of our time. 3D, or additive printing, holds possibilities that sound like science fiction, like printing new artificial limbs, human tissue, and medical tools. One company is designing a 3D printer that could someday print an entire house. But there are skeptics who say that 3D printing is expensive and their uses are still more fiction than fact. We'll look at this astonishing new technology with a Charlottean who happens to be an expert, when Charlotte Talks. Originally aired 6/27/13.