Rohit Prasad, a metallurgist at the University of Utah, is on the show to talk about hemimorphite. This somewhat obscure mineral contains a type of metal that is relatively new to the world economy and Rohit has some interesting insights to share about it. In addition, he plays a little bit of beer pong and explains why he sometimes sweet-talks his opponents. Finally, Marquis talks about Protease and Gentiles, two of his upcoming books.