We talk to Jennifer Ouellette, author of The Calculus Diaries: How Math Can Help You Lose Weight, Win in Vegas, and Survive a Zombie Apocalypse. We’ll find out how much advanced math figures into our daily lives, and how even the mathematically challenged can learn to love the language of numbers. And hip-hop science advocate Baba Brinkman returns to discuss his new project, The Rap Guide to Human Nature. Find out more about Baba's crowdfunding drive for the Rap Guide to Evolution DVD!