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Our 15 Most Popular T-Shirts

Mangesh & Jason

Will Sitting Too Close To The TV Hurt Your Eyes?

Daven Hiskey

Daven Hiskey runs the wildly popular interesting fact website Today I Found Out. To subscribe to his “Daily Knowledge” newsletter, click

Looking at Cute Animals Makes You Work Harder

Jill Harness

If your boss has ever gotten on your back for looking at Cute Overload, I Can Has Cheezburger or any other site filled with pictures of adorable little animals, you can now defend your predilection fo

Brain Game: Math Square #148

We welcome the holiday season with a brand new Monday Math Square for today's mentalfloss.com Brain Game challenge.

Morning Cup of Links: Caffeine in Your Oatmeal

Miss Cellania

When you combine all the different colors of light, you get white light.

Download the New Issue of mental_floss Magazine!

Mangesh & Jason

The latest edition of mental_floss is now available in the iTunes store—and you can download it free! If you already have the mental_floss iPad app and you're having trouble downloading the ne

Weekend Links: The World's Worst Hotel

Allison Keene

Great long read: "Noam Chomsky on Where Artificial Intelligence Went Wrong." * In the series of "Animals!

13 Patents Designed to Build a Better Mustache

Erin McCarthy

You may have some buddies participating in Movember, an annual event that raises awareness of (and money for) men's health issues.

Last Week's Most Popular Stories

Jason English

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

Weekend Links: 10 Movies the Internet Killed

Allison Keene

Here before you I present: the bizarre alien creature that is the human vocal cords!

Buildings You Need a Boat to Explore

Jill Harness

No matter how much forethought you put into the construction of a building, there's no way to accurately predict everything that could happen to it.

Forget Wayne's World 3: 8 Movie Sequels Actually on Track for 2015-16

Danny Groner

This week reports surfaced online that we'd be getting another installment of Wayne's World. Sadly, it was just a rumor.

The United States Once Planned To Nuke The Moon

Daven Hiskey

When it seemed like the Soviet Union was winning the space race, the United States had to do something to boost morale.

Iceland's Landscapes Created With Wool

Jill Harness

It's one thing to love the natural beauty of a particular country, but it's an entirely different matter to make incredibly detailed dioramas as a reminder of the time you spent there—especi

Black Friday Sale! Save 25% in Our Store

Andréa Fernandes

Our Black Friday sale runs through Sunday night.