Host Ira Glass speaks with Jim McManus, whose book Positively Fifth Street inspired Ira to start playing poker. Jim talks about holding and folding, why a poker novice is sometimes the toughest player to beat...and the Cuban Missile Crisis.

Ira Glass speaks with several members of the Planet Money team, who all found themselves—in the course of their reporting—independently asking the same stoner-ish question: What is money? Ira and Planet Money producer Jacob Goldstein discuss a pre-industrial society on the island of Yap that used giant stones as currency. The book that Jacob read about Yap is called The Island of Stone Money.