3D Printing

A Chinese Company Managed to 3D-Print 10 Buildings in One Day

Each cost less than $5,000.

A One-of-a-Kind Kayak Painstakingly Assembled from 28 3D-Printed Blocks

Building a boat, Minecraft-style.  

Undetectable Guns May Soon Be Legal

But that may not be as big a safety threat as you think.