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THE KNOWLEDGE FEED

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Strange States: Connecticut's Brain and Tumor Collection

Rob Lammle

The Strange States series will take you on a virtual tour of America to uncover the unusual people, places, things, and events that make this country such a unique place to call home.

What is Ricin?

Matt Soniak

Here’s what you need to know about the toxin everyone is talking about.

10 Stunning Museums in North America

Jill Harness

Last month, we took a look at some of the most beautiful museums in Europe. Now it’s time to hop across the pond and explore some of the loveliest museums in North America.

The Real Names of 10 Operation Ailments

Stacy Conradt

Cavity Sam has been plugging away, suffering through numerous operations at the hands of unskilled amateurs since 1965.

Morning Cup of Links: Movies That Did the Book Justice

Miss Cellania

How to Free Dive

Humans have been free diving—plunging under the water with just a lungful of air—for over 2500 years, and today’s top pros can make it 700 feet deep on a single breath.

Why Are They Called "Barbershop Quartets"?

Kara Kovalchik

7 Internet Memes Who Sued

The Week

What happens when the surprise stars of the internet fight back.

World War I Centennial: Franz Ferdinand Opposes War with Serbia

Erik Sass

9 Colorful Words and Phrases from Breaking Bad's Final Season

Angela Tung

We're just hours away from the series finale of Breaking Bad. All season we've been listening for interesting terms. Here are some of our favorites.

Last Week's Most Popular Stories

Jason English

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

Weekend Links: Animals in Outer Space

Roma Panganiban

These Jumpers Scream Geeky Baby Class

Jamie Spatola

Floss:Handmade Oh Baby, That's Smart!

7 Nifty Things in Washington’s Presidential Library

Mark Mancini

It took 216 years, but on Friday George Washington was finally honored with his own presidential library. Let's take a peek inside.

Weekend Links: Famous Poems Read By Famous Men

Roma Panganiban

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