Fully functional loudspeaker is 3-D printed

Cornell researchers in Hod Lipson’s Creative Machines Lab have 3-D printed a working loudspeaker, seamlessly integrating the plastic, conductive and magnetic parts, and ready for use almost as soon as it comes out of the printer.
It’s an achievement that 3-D printing evangelists feel will soon be the norm; rather than assembling consumer products from parts and components, complete functioning products could be fabricated at once, on demand.

More info at http://www.news.cornell.edu/stories/2013/12/fully-functional-loudspeaker-3-d-printed

WiTrack: 3D Motion Tracking Through Walls Using Wireless Signals

The NETMIT group at MIT develops a new technology that can see through walls, performing 3D motion tracking. The technology has applications in gaming, elderly monitoring, and gesture-based user interfaces.

Bing Maps Preview App

The Bing Maps Preview app uses the best of Windows 8.1 and Bing to help you get real world tasks done with beautiful 3D, designed for touch and personalization courtesy of your Facebook friends, favorite routes and more.

More info at http://www.bing.com/blogs/site_blogs/b/search/archive/2013/12/05/maps3d.aspx