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What is an Adam's Apple?

Matt Soniak

Adam's apple photo via ShutterstockTouch your fingers to the front of your throat and start humming. Feel around until you can feel vibration directly under your fingers.

8 More Regular People Who Became Internet Memes

Adrienne Crezo

Last month we introduced you to nine real people whose pictures have become famous on the internet. Now meet eight more! 1. Ridiculously Photogenic

The Man Who Gave Up Money

Chris Higgins

In 2000, Daniel Suelo opted out of the cash economy. For the past dozen years, he hasn't used money, hasn't paid taxes, and hasn't used government financial assistance services.

Official State Beverages

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A little more than half the states have gotten around to naming an official state beverage. From Kool-Aid to cranberry juice to plain old water, can you tell which state has chosen each drink?

How a Fish Tells His Friends That He's Been Injured

Jill Harness

It took 70 years, but scientists have finally discovered how an injured fish notifies his peers when he is hurt, giving them the signal to bolt.

The Apple Puzzle

David K. Israel

With only four cuts, you can turn any apple into a cool (albeit nerdy) puzzle.

Brain Game: Math Square #119

Have at it with a brand-new Monday Math Square to jump-start this week's quintet of mentalfloss.com Brain Games.

Morning Cup of Links: Ye Olde Links

Miss Cellania

A new poll of America's favorite cities shows the Pacific Northwest has a great reputation, with cities #one and #two.

5 Questions: Try to Contain Yourself

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Weekend Links: The Problem With Being Michael Jordan

Allison Keene

Since last week marked the anniversary of the sinking of the Titanic, the legendary ship has been mentioned almost everywhere. Then again, it never seems to fade far from memory.

What on Earth is Sun-Earth Day?

Maggie Ryan Sandford

Image Credit: Sylvie Beland/NASA Today is Earth Day, the internationally designated time to pay extra-special attention to human impact on Earth’s ecology.

Last Week's Most Popular Stories

Jason English

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

Name the Pitchers Who've Thrown a Perfect Game

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The first two perfect games were pitched just five days apart in 1880. We won't ask you to recall John Ward (Providence Grays) and Lee Richmond (Worcester Ruby Legs), but how many of the other 20 perfect game pitchers can you name in 5 minutes? Last names only will suffice. (Updated June 14, 2012.)

At the Libraries: Librarian Stereotypes

Miss Kathleen

Each week Miss Kathleen provides links to a variety of stories about libraries, authors, and books.

Weekend Links: A Star Is Born ... 25,000 of Them!

Allison Keene

Yes, file this under "First World Problems," but I'm sure each of you has experienced at least one of these 21 Absolute Worst Things In The World and felt, for that moment, like it trul