![Background show artwork for Every Little Thing](https://gimlet.spotifycdn.com/hero/0fb21d37-9c74-4797-bd7a-d5e36ca6817a/fallback.jpg)
Plus, how to pee in zero-G.
Episode Guests: Microbiologist and faculty director of The Microbiome Center, Jack Gilbert; host of The Habitat podcast, Lynn Levy.
Special thanks to caller Jenny and the experts we surveyed: Jason Tetro, William Schaffner, Chuck Gerba, Rob Dunn, Jenny Hayden, Steffanie Strathdee, Liz Scott, Kimberly Page, and Maria Gloria Dominguez-Bello.
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