And Tecnologia Humana 3D is using sonogram data to 3D print miniature models of unborn babies for their parents to hold.

ENGADGET: Inhabitat's Week in Green: flying electric car, 3D-printed livers and a two-story-tall bike

You can print a dozen, see if there is a market for them, and print 50 more if there is, modifying the design using feedback from early users.

ECONOMIST: How a new manufacturing technology will change the world