It was only in the last few decades that science became aware that itches aren't just low-level pain. And in that time, the mystery of how we itch and why we scratch has gotten even more baffling. Explore the mystery with Josh and Chuck in this classic episode.

Short Stuff: Phone Books
14:59

Beans and Rice Feeds the World
43:04

Selects: How Peanut Butter Works
56:42