THE KNOWLEDGE FEED

Summer Wardrobe Stock-Up Sale Ends Tonight!

Jason English

Right now all our t-shirts are $14.90. But the sale ends tonight at 11:59pm Eastern Time! Just enter the code SUMMERSTYLE before checkout.

Scanner Nation: the Police Radio Craze

Ransom Riggs

When I was a kid, my uncle had an old CB radio in his kitchen, and some nights we'd sit around listening to the police and fire bands, just to "see what was going on" around town.

10 Director's Cuts That Change The Plot

Jason Plautz

Whether because of a dispute with the studio or just a plethora of unused material, a director often feels the need to re-release a classic (or not-so-classic) film.

Brain Game: Math Square #80

The three Ms for today are mental_floss, Monday, and Math Square. Enjoy! The nine white squares inside the main red grid should be filled with the digits 1 through 9.

The Number of the Day: 10,000

Colin Patrick

Amazon.com founder Jeff Bezos is currently working with a team to place a 10,000-year clock within a remote Texas mountain.

Morning Cup of Links: Radiana and Rocketeer

Miss Cellania

The responsibility of research: the dual use dilemma. That's the possibility that your greatest accomplishment could eventually be used for nefarious purposes.

The Lyrebird Is a Bit of a Liar Bird

Jill Harness

Please play the following video with your eyes closed and try to imagine what kind of city scene is occurring amidst the noise: Now, go ahead and watch the actual video, keeping in mind that it

Bob Uecker: Pro Wrestling Icon

Colin Patrick

While doing costume research for my best friend’s Major League-themed birthday party (he’s a disgustingly huge Cleveland Indians fan), I learned something I didn't know about Bob Uecker.

Now You Know

Stacy Conradt

In the 1970s, Mattel sold a doll called “Growing Up Skipper.” Her breasts grew when her arm was turned. More from mental_floss… Where Do Baby Carrots Come From? * Would a Dingo Really Eat Your

What Do You Call Sprinkles?

Jason English

Simple question: What word do you use for the tiny, sugary bits you'd find atop ice cream?

Weekend Links: Bizarre Musical Instruments

Allison Keene

These links have involved a fair amount of cosmos appreciation this week, but can I be blamed when there are these sort of jaw-dropping pictures of the Sun out there? * If you're looking for so

Last Week's Most Popular Stories

Jason English

In case you weren't obsessively refreshing mentalfloss.com all week, here's what you

Weekend Links: Wherein a Black Hole Eats a Star

Allison Keene

This is probably the closest thing to an "awww kitteh" link you'll ever get from me (not because I don't love them, but I try to hold myself to some kind of standard!): Introducing

How Did You Know? – Day 4 Level 3/Bonus Round

David K. Israel

YES! You can play this challenge/contest without knowing a thing about the weekly hunt! It's sort of a one-off - a stand-alone if you will.

The Late Movies: Sesame Street International Part 3

Miss Cellania

Have you ever wondered how Sesame Street looks to people in countries other than the US? Thanks to the world wide web, we can get a glimpse.

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