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THE KNOWLEDGE FEED

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The 7 Longest Messages Sent into Space

M Asher Cantrell

Of course, we’re always spitting out random garbage into space—radio and TV signals, mostly. But the signals on this list are intended specifically to attract aliens.

Listening to Soft Voices Can Cause "Brain Orgasms"

Meghan Holohan

An increasing number of people report experiencing autonomous sensory meridian response (ASMR), a whole body tingling that soft, monotone voices can trigger.

10 Breathtaking South American Museums

Jill Harness

We’ve seen some absolutely stunning museums in Europe and North America. Now it’s time to head south.

Minecraft: The Story of Mojang

Chris Higgins

Can You Legally Marry A Dead Person?

Mark Mancini

If, for whatever reason, you long to wed somebody who’s already departed for the great beyond, your local government might just be willing to oblige … depending on where you live, and if you meet cert

Our Biggest T-Shirt Sale of the Year!

There's a mental_floss shirt for everyone on your list!

The Accidental Birth of Wrapping Paper

Ethan Trex

J.C. and Rollie Hall ran into a problem during the 1917 holiday season. Business was booming, and they’d run out of the tissue papers that were the era’s standard gift dressing.

Weekend Links: A Cricket Sing-Along

Roma Panganiban

13 Deliciously Geeky Pies

Jill Harness

December 1st is one of several Pie Day holidays celebrated around the world. You can celebrate by baking and eating pie, or by looking at these.

How to Sharpen Pencils

Chris Higgins

Weekend Links: The Oldest Selfie of All

Roma Panganiban

The Real Walter White

Chris Higgins

A Brief History of Black Friday

Ethan Trex

The unofficial start of the holiday shopping season is often referred to as the busiest shopping day of the year. But where did this tradition start and just how big is it?

10 Deserted Places and Why They Were Abandoned

DeAnna Kerley

Eerie pasts and uncertain futures.

Toys, Trampling and Tragedy: The Victoria Hall Disaster

Matt Soniak

If this year’s Black Friday is like any other, too many people will crowd into stores and trample over each other to get a deal on some Christmas presents.

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