



Why Is There a Pooping Figurine in Some Nativity Scenes?
In Catalonia, there's a two-hundred-year-old tradition of including a figurine of a man pooping in the shadows of Nativity scenes. Learn about el caganer in this episode of BrainStuff, based on this article: https://people.howstuffworks.com/culture-traditions/holidays-christmas/pooping-man-catalan-…

How Do Rice Cookers Work?
These small appliances help home cooks achieve excellent rice via two categories of technology: ingeniously simple physics, or incredibly complex algorithms. Learn about heat-sensitive switches and fuzzy logic in this episode of BrainStuff, based on this article: https://home.howstuffworks.com/rice…

How Can Mudlarking Turn Trash Into Treasure?
Mudlarking means sifting through riverbank muck in hopes of finding lost or discarded historical artefacts. Learn how it works, especially in the River Thames, in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/environmental/earth/archaeology/mudlarking.htm

How Do Walruses Work?
These arctic animals have complex social structures and may eat 6,000 clams in a single meal. Learn more walruses in this episode of BrainStuff, based on this article: https://animals.howstuffworks.com/mammals/walrus.htm/printable

What Happens When Your Immune System Turns on You?
Your adaptive immune system remembers specific germs and fights them really effectively -- but it can sometimes make mistakes and attack your own healthy cells. Learn how the adaptive immune system works (and how it can go wrong) in this episode of BrainStuff.

How Can Slime Mold Think Without a Brain?
Slime molds are collectives of single-celled organisms that don't have neurons, much less brains, but they can move, solve mazes, and remember where food is located. Learn what we know (and don't know!) about them in this episode of BrainStuff, based on this article: https://science.howstuffworks.c…

What's the Difference Between Cougars, Pumas, and Mountain Lions?
Although there can be small differences, all of these are local names for the same species of cat, Puma concolor. Learn about them in this episode of BrainStuff, based on this article: https://animals.howstuffworks.com/mammals/cougar-vs-mountain-lion.htm

Who Named the Americas?
In the early 1500s, a sailor by the name of Amerigo Vespucci published lurid pamphlets about his travels to a distant continent. Learn how a pair of mapmakers regretted naming that continent after him in this episode of BrainStuff, based on this article: https://history.howstuffworks.com/historical…

BrainStuff Classics: Would Turkey Be So Popular Without Thanksgiving?
Americans eat a LOT of turkey around the winter holidays, but why? Learn about turkey's festive history and when we eat the most of it in this classic episode of BrainStuff, based on this article: https://recipes.howstuffworks.com/menus/turkey-popularity.htm

Could a Solar Flare Wipe Out Earth's Electronics?
Powerful events on the surface of the sun, like solar flares and coronal mass ejections, produce radiation and magnetic waves that could indeed affect electrical and communications systems here on Earth -- though they'd have to be massive. Learn more in this episode of BrainStuff, based on this art…