Have you ever wondered why things in the world have the smells that they do? Food science writer Harold McGee, long a fan of flavor, explored the world of smell to find out. He joins Francis to talk about his discoveries, explaining how he “listens” to smells, and what it can teach us about our lives. He’s one of the legends of food science writing and is the author of On Food and Cooking, the beloved, best-selling, game-changing culinary guide. His latest book is Nose Dive: A Field Guide to The Smells of the World.