Summary: Additive manufacturing, also known as 3D-printing, was invented in the 80's as a rapid prototyping process and has gained steam in recent years. With so many obvious benefits, is there a dark side to this tech? We delve into crime and national security concerns with <a href="http://3dprintingindustry.com/" target="_blank">3dprintingindustry.com</a> contributor, John Hornick (<a href="https://twitter.com/jhornick3d1stop" target="_blank">@jhornick3d1stop</a>). <em>Get John Hornick's book, 3D Printing Will Rock the World, via <a href="http://www.amazon.com/gp/product/B0198PFGDI/ref=dp-kindle-redirect?ie=UTF8&btkr=1" target="_blank">amazon.com</a>.</em> <a href="http://www.ernlive.com/show/popular-science-radio/57/episodes/game-changing-gear-full-show-313">Listen to Full Episode #313</a> <a href="http://ern-wp-content.s3.amazonaws.com/wp-content/uploads/2016/04/PS_042316_IHEART_03.mp3" target="_blank">Download Segment 3</a>
