The Wiki Weapon Project--the attempt by University of Texas law school student Cody Wilson to develop a 3-D printable handgun and distribute its digital design file across the Web--is under fire. Stratasys, the maker of the 3-D printer the project’s backers hoped to use to prototype its designs, has reclaimed the printer they originally sent to Wilson, citing Wilson’s lack of a federal firearms manufacturing license and the company’s right to rescind any lease if it believes its printers will be used for unlawful activity. This whole controversy exists in a huge legal gray area, but for now it looks like the Wiki Weapon is stalled.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.