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In this episode of The Atlas Obscura Podcast, we spend some time with best-selling author Mary Roach, who takes us into the hidden corners of the scientific world. From training to poop in space to the surprisingly pleasant Common Cold Unit, all the way to the inside of Elvis’s colon. If you want to check out her work, we recommend starting with Packing for Mars, or checking out an excerpt of her latest book, Fuzz: When Nature Breaks the Law.

Our podcast is an audio guide to the world’s wondrous, awe-inspiring, strange places. In under 15 minutes, we’ll take you to an incredible site, and along the way you’ll meet some fascinating people and hear their stories. Join us daily, Monday through Thursday, to explore a new wonder with cofounder Dylan Thuras and a neighborhood of Atlas Obscura reporters.

NASA/Public Domain