At a girls' boarding school in what's now Tanzania, a fit of giggles expanded into a months-long epidemic of stressed-out laughter affecting hundreds of people. Learn what we know (and still don't know) about this mass psychogenic illness in today's episode of BrainStuff, based on this article: https://health.howstuffworks.com/mental-health/human-nature/behavior/1962-tanganyika-laughter-epidemic.htm

How Does Butter Get Its Texture, Flavor, and Color?
14:02

Why Do We Call Dibs and Shotgun, and Who Was the Real McCoy?
09:22

Why Is Siberia's Batagaika Crater Known as the Doorway to Hell?
10:56