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THE KNOWLEDGE FEED

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10 Crazy Confusing Traffic Signs

David K. Israel

These road signs are enough to make anyone stop and scratch their head.

Fight Club Rules 3 Through 8

Chris Higgins

While almost everyone knows the First Rule of Fight Club and of course the Second Rule of Fight Club, it occurs to me that there are six more Rules of Fight Club that are a lot less famous.

Brain Game: Math Square #112

To begin a new week, the mentalfloss.com Brain Game brings you a new Monday Math Square. Enjoy! The nine white squares inside the main red grid should be filled with the digits 1 through 9.

Morning Cup of Links: Catty Politics

Miss Cellania

Better Living Through Electrochemistry. Sally Adee tried out a DARPA helmet that stimulates the brain with electricity.

If the Titanic Hadn't Sunk, This Female Pilot Would Be a Lot More Famous

Jill Harness

You know Amelia Earhart, but you've probably never heard of Harriet Quimby. It's quite likely that she inspired Earhart, who didn't start flying until a decade after Quimby.

Weekend Links: The Very Best and Worst of Movie Science

Allison Keene

Not many of the fantastic crop of Oscar-nominated short films are available online, but animated winner "The Fantastic Flying Books of Mr.

Last Week's Most Popular Stories

Jason English

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

7 Children's Books Written in Response to Other Books

Stacy Conradt

Some authors write books because they have a way with words. Others write books mostly to spite another author.

The Late Movies: Jump Rope!

Miss Cellania

Jump rope can be a fun pastime for kids, a fitness routine for grown-ups, or serious business for athletes who make it into an art form.

Weekend Links: Pink? It's All In Your Mind

Allison Keene

I am legitimately concerned about this - I think the headline says it all: "They Did It To Pluto, But Not To Pink!

Mikhail Gorbachev: Pizza Hut Spokesman

Stacy Conradt

Happy belated birthday to Mikhail Gorbachev, who turned 81 yesterday.

The Late Movies: Throw a Card, Any Card!

Jason English

In the March/April issue of mental_floss magazine, Neil Janowitz caught up with Rick Smith Jr., the guy who holds the world distance record for playing-card throwing. We promised some videos of Mr.

Operation Cornflakes: How the Allies Scammed the Nazi Postal Service

Matt Soniak

On February 5, 1945, with World War II in its last desperate months, a German train made its way to the city of Linz. Suddenly, Allied planes swooped in, dropping bombs and derailing it.

Places You Went as a Kid That You Loved

Jason English

On Fridays, I post a series of unrelated questions meant to spark conversation in the comments. Answer one, answer all, respond to someone else's reply, whatever you want.

The Scully Box

Chris Higgins

Gillian Anderson is much shorter than David Duchovny -- estimates of their actual heights vary, but there's roughly a 10" height difference there.

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