Mental Floss

ALL STORIES

Why do so many Americans work 9 to 5? The familiar schedule grew out of labor activism, federal law, and innovations introduced by Henry Ford.

Jenny Cohen








What does "41" mean in slang? Here's how a seemingly random number became Gen Alpha and Gen Z's latest inside joke after 6-7.

Paul Anthony Jones












Ever wonder why your dime and quarter have tiny ridges on the edge? It’s not just for grip—it’s a genius invention from the 1600s that saved the world’s currency from thieves.

Matt Soniak, Nitya Rao