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Is It Bad to Use the Same Plastic Water Bottle Every Day?

Matt Soniak

If you’re not washing it, then yeah, it can get kind of gross.

Brain Game: South Americ-a

Geography is a common subject for the mentalfloss.com Brain Game's Tuesday Test Time challenge. Maybe we'll change the name to Tuesday Travels.

Morning Cup of Links: Deadly Dino Gas

Miss Cellania

Why the Campaign to Stop America's Obesity Crisis Keeps Failing.

World War I Centennial: Rattling the Saber at Sea

Erik Sass

Installment #15: One of the grand traditions of Britain’s Royal Navy was the royal review, in which all the vessels of the home fleet – the core force, responsible for protecting the British Isles fro

WanderLinks: How Stadiums Enforce Lifetime Bans

Colin Patrick

Thanks so very much to everyone who contributed name suggestions for our new column. We're going to test out a few different names this week, starting today with WanderLinks.

60% of People Can't Go 10 Minutes Without Lying

Kathy Benjamin

Lie detector image via Shutterstock There are two things you can say for sure about human beings: our opposable thumbs make us great at using tools, and we are all big, fat liars.

Brain Game: Math Square #121

It's the first Monday in May, so merrily mull over this Monday Math Square as today's mentalfloss.com Brain Game challenge.

Morning Cup of Links: Dancing with the Dead

Miss Cellania

The Avengers did pretty well on opening weekend ...smashing box office records like the Hulk smashes scenery.

11 Fabulous Libraries in South America

Jill Harness

Last week we toured some of Europe's most beautiful libraries. Now let's see what South America has to offer. 1. The Royal Portuguese Reading Room,

Last Week's Most Popular Stories

Jason English

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

Weekend Links: The 37 Saddest Kickstarters

Allison Keene

With all of this political posturing left and right and swing votes and grizzly moms, we mustn't overlook … the Clown Vote!

Weekend Links: A Perfect Strangers Video Game

Allison Keene

Thanks to Randy for sending me the greatest link of 2012 (so far): a "Perfect Strangers" video game! That theme song … I am nearly weeping from the flawlessness.

The Late Movies: The Best Simpsons Songs

Matt Soniak

I know I’m showing my age when I talk to people and say something like, “Remember when The Simpsons was really funny?” and they don’t. Awkward.

Doctor Who: Mangling History

Calli Arcale

Doctor Who has a long and noble history of attempting to convey history to its young viewers. It has not always been completely successful, however.

Cheat Sheet: 17 Essential Talking Points on the Kentucky Derby

Ethan Trex

In advance of Saturday's Kentucky Derby, here's our three-minute guide to the most exciting two minutes in

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