Coming up, we look at food allergies and the best practices for navigating a world with specific dietary needs. Also, explore how your body reacts to the rising and the setting of the sun. We'll wrap with a talk about the experience of head trauma.

Guests:
Patrick Emery, professor of Neurobiology, University of Massachusetts Medical School
Dr. Scott Sicherer, author of "Food Allergies: A Complete Guide for Eating When Your Life Depends on It"
Elizabeth Lopotto, science editor, The Verge