Homepage MF slider




Why Aren't There B Batteries?

Matt Soniak

Reader Donna wrote in wondering why there are AA, AAA, C and D batteries, but no B. Well, there used to be, but they’re not really needed

How Do Cats Purr?

Matt Soniak

Biologists used to think that purrs were the sound of blood surging through cats’ inferior vena cava, the large vein that carries blood from the lower half of the body into the heart.

Brain Game: The Big Pond

Hop across the Atlantic to solve today's mentalfloss.com Brain Game Think Thursday challenge.

The Favorite Movies of 42 Famous People

Eddie Deezen

Presidents & Politicians What's with presidents and High Noon? 1.

Morning Cup of Links: Laugh Tracks

Miss Cellania

Public schools are experimenting with classes segregated by sex. On the one hand, it eliminates some student stress and inhibitions.

The Disputed History of the Tarzan Yell

Bill DeMain

Johnny Weissmuller made it famous. Carol Burnett made it funny. But the origin of Hollywood’s iconic jungle cry is shrouded in

11 Internet Tattoos

Jill Harness

While I may be a tattooed professional blogger, I’ve never been driven to get a tattoo of something related to the internet—especially given how fast things fizzle out online.

4 Royal Scandals Juicier Than Prince Harry's Strip Billiards

Kathy Benjamin

A few days ago, photos of Prince Harry cavorting naked with a blonde hit the web.

Why Can't You Remember Being a Baby?

Julia Davis

There are probably blackout periods you can’t remember at all from your childhood, and the memories you do have are likely hazy and garbled.

The Late Movies: Smarter Every Day - Slo-Mo Science Videos

Chris Higgins

Missile engineer Destin (last name undisclosed) made waves a few weeks back with his video explaining Why Cats Usually Land on Their Feet.

How Does Aspirin Help During a Heart Attack?

Kara Kovalchik

The heart is the most important muscle in the body, so it seems like something of a marketing ploy by the folks at Bayer to suggest that something so simple as a humble aspirin tablet can be of any us

The Missing Links: Is Lake Erie Wrecking English?

Colin Patrick

Stickmen May Not Have Organs, But They Do Have Feelings The plight of the stickman doesn’t get nearly enough attention these days.

World War I Centennial: Even Bigger Battleships, Part II

Erik Sass

Installment #32: In the early years of the 20th century, the United States, a burgeoning industrial power, looked to protect its booming overseas commerce with a powerful navy.

10 Amazing Art-Inspired Cakes

Jill Harness

It’s pretty hard to argue that modern cake decorators aren’t artists, especially when you look at some of their takes on games, horror movies and children’s stories.

How Movie Effects Fool Your Brain

Chris Higgins

In this funny 15-minute TED Talk, special effects guru Rob Legato explains, shot by shot, how he made visual effects work in Apollo 13, Titanic, and Hugo.