These Crazy Guns Shoot Pewter, Plastic, and Paper Mache
http://www.wired.com/design/2013/06/design_06212013_funguns/#slideid-152629
Meet the maker
http://web.mit.edu/newsoffice/2013/limor-fried-adafruit-0531.html
Can 3D Printing Go Green?
http://swissnexsanfrancisco.org/Ourwork/events/3dprinting?utm_content=randy_zadra%40carleton.ca&utm_source=VerticalResponse&utm_medium=Email&utm_term=%20first%20international%20forum%20on%20sustainable%203D%20Printing&utm_campaign=the%20nexus%20July%202013%3A%20trend%20scouting%2C%20quantified%20self%2C%20and%20robots%21content