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THE KNOWLEDGE FEED

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15 Mysterious Facts About ‘The Hardy Boys’

Janet Burns

10 Creepy Facts About ‘A Nightmare on Elm Street’

Scott Weinberg

Don't fall asleep.

6 Examples of Early Fast Food From Ancient History

Shaunacy Ferro

America didn't invent the notion of fast food. Easy, greasy fare has been around for thousands of years.

48 Amazing Facts From Our Instagram

Did you know mental_floss has an Instagram account? That's just one of the many facts you can learn today if you follow us! Here are 48 more to give you a feel of what you're missing out on.

Watch Steve Jobs Present the First-Ever 'Stevenote' in 1984

Adrienne Crezo

Steve Jobs's first 'Stevenote' was nearly lost to history until a group of computer historians and tech legends teamed up to preserve and digitize the footage.

25 Things You Should Know About Philadelphia

Alvin Ward

It's home to the Liberty Bell, the Declaration of Independence, and delicious, delicious cheesesteaks. But there's even more to celebrate about the City of Brotherly Love.

15 Phat Pieces of 'Clueless' Slang

Angela Tung

In honor of Clueless' 20th birthday (we know—we're totally buggin'!), we're exploring the origins of the movie's most memorable phrases.

How LEGOs are Made

Chris Higgins

Plastic, robots, and more robots.

Do Smarter People Drink More? What 5 Studies Say

Jordan Rosenfeld

As far as the science goes, the jury's still out. You're going to have to find your rationalizations elsewhere.

The 20 Highest-Grossing Movies of All Time

Austin Thompson Hayley Harding

Have you seen them all?

How to Tell When 8 Fruits Are At Their Tastiest

Hannah Keyser

To help prevent that post-produce purchase regret, we've rounded up some tips for picking the ripest, most delicious fruit.

The Invisible Universe Of The Human Microbiome

Chris Higgins

If you've ever wondered what "probiotics" or "prebiotics" are, this is a highly digestible overview.

The Mysterious Case of Skeleton Lake

Chris Higgins

Hundreds of skeletons lie in a frozen lake in India. What happened there?

25 Things You Should Know About Detroit

Sarah Grossbart

You know about the cars—and that Eminem grew up on Eight Mile. But there’s plenty more to learn about Michigan’s most populous city.

How Movie Projectors (Used to) Work

Chris Higgins

If you like to geek out over impressive machinery, here's your chance.

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