Why Do We Poop And Fart?

Deep in the basement of the San Diego Natural History Museum, there are thousands of jars filled with preserved reptiles and amphibians. In this episode, But Why takes a tour with collections manager Adam Clause to answer your questions about lizards! How do lizards climb walls? ...  Show more

But Why turns ten years old on April 1, 2026! To celebrate this milestone, we’re listening back to our very first episode. We’ve got owls and turtles and bears. Naturalist Mary Holland gets into the details about hibernation–including the questions you may not even have thought t ...  Show more

Today we're talking about something that all of us do. They can be loud or soft, sometimes smelly and almost always funny. We're talking about fluffs, toots, air biscuits - yes, farts! - and why they come out of our bums. Join Professor Kourosh Kalantar-Zadeh as we shrink to f ...

Warning! This episode is all about the fascinating and gross world of doo doo. We know you have a lot of poo questions because you’ve sent many, many of them to us. So we’re finally bringing you the poo answers! It’s a poop party!We’ve invited scientists to tell us about weird an ...  Show more

This episode is a real stinker, but it had to happen. We go behind the scenes on what makes butts and poop so funny. Why does the mere mention of them make us laugh? We all have butts and we all poop. Those are the facts. But human butts are different than almost any other animal ...  Show more

When most people think about poop, they think about shame and embarrassment. It’s something they don’t want to talk about and that prevents us from learning things—like the number of times a day we should be going number two—that can keep us healthy! On this episode, Dr. Jen tell ...  Show more