THE KNOWLEDGE FEED

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Brain Game: The Two Spirals

I strive to use original creations whenever possible for the mentalfloss.com Brain Game, but occasionally, I stumble upon an old challenge - often a visual one - that's worthy of reintroduction.

Morning Cup of Links: Zombie Awareness

Miss Cellania

The Library of Congress has an extensive online collection of historic sound recordings going back over 100 years called National Jukebox.

The Quick 10: 10 Things Yogi Berra Actually Said

Stacy Conradt

Lawrence Peter Berra - you likely know him better as Yogi - is 86 today.

The Late Movies: Guess The Theme IV

Mark Arminio

It's Thursday night, which means that it is time for everyone's favorite game: GUESS THE THEME!

Strange Geographies: The Accidental Sea

Ransom Riggs

Today's Strange Geographies post revisits a place I've been several times before -- the Salton Sea.

Explaining SPF (And Why Sunscreen Should Be Measured by the Shot)

Ethan Trex

As the spring heats up, more and more of us will be slathering on sunscreen before heading outside to enjoy the weather. What SPF should we look for? And what does that number actually mean, anyway?

What Does the Q in Q-Tips Stand For?

Jason English

If you followed @mental_floss on Twitter, you'd know.

This Tetris Documentary Will Rock You

Chris Higgins

So I'll go ahead and assume you're aware of King of Kong, the videogame documentary that chronicles an epic struggle to dominate the game of Donkey Kong.

Graduation Special: All Shirts $14.90!

Mangesh & Jason

Ditch the boring graduation robes this season and step out in style. This week, mental_floss t-shirts are just $14.90!

Create Your Own Unit of Measurement (And Win!)

Jason English

© Joe Giron/Corbis We recently discussed a few unusual units of measurement, including the Wheaton (500,000 Twitter followers) and the milliHelen (the quantity of beauty required to launch a single

The Buttered Cat Paradox

Miss Cellania

Buttered toast always lands butter-side-down. A cat always lands on its feet. What would happen if you attached toast to a cat's back, butter side out?

Brain Game: DC Follies

I got on a roll after compiling yesterday's Presidential Middle Names quiz, so here's a related Think Thursday challenge for the mentalfloss.com Brain Game.

Morning Cup of Links: Spies and Crossbones

Miss Cellania

Women Spies of the Civil War. They also serve who snoop and risk their lives away from the battlefield. * More misspelled food. And some more. So Stupid you have to laugh.

The White House Prom of '75

Stacy Conradt

Remember the time you held a raging party at your house when your parents were out of town? Susan Ford did that, too.

The Late Movies: Lin-Manuel Miranda Raps on The Electric Company

Chris Higgins

Lin-Manuel Miranda came to my attention when he rapped about Alexander Hamilton.

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