Do you knock on wood or avoid particular numbers? People around the world adhere to superstitions to attempt to change their luck -- and some of those superstitions are remarkably similar. Learn more in this classic episode of BrainStuff, based on this article: https://people.howstuffworks.com/superstitions-universal-across-cultures.htm

How Does Bioluminescence Work?
12:15

How Is Maillardet's Automaton Still Wowing Us After 200 Years?
09:28

How Do Tiny Capers Pack Such a Big Flavor Punch?
06:35