THE KNOWLEDGE FEED

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6 Hugely Successful Products Originally Invented for Something Else

Haley Sweetland Edwards

Some of the world’s most famous, civilization-altering discoveries happened by accident. Take Penicillin, for example.

Praise Cheeses! Free Shipping on Orders Over $100

Mangesh & Jason

* Shipping offer expires on Tuesday, January 31, 2012. Customers must enter billing and mailing address for free shipping coupon code to work at checkout. Offer valid only for US and Canadian mailing

9 Crazy, Creepy, and Creative Knit Projects

Miss Cellania

Maybe you can knit a scarf or a sweater. If so, imagination is the only thing standing between you and these delightfully odd creations. Well, time may be another factor.

10 Twitter Handles That Were Hard to Score

David K. Israel

I was doing some research recently on popular first names, which got me thinking: Who scored the most common first names as Twitter handles?

Lectures for a New Year: Is Time on Your Side?

Chris Higgins

In this brilliant talk, Professor Philip Zimbardo discusses different ways human minds focus on time. Do you focus on the past?

Brain Game: Done Yet?

Today brings with it a new mentalfloss.com Brain Game Think Thursday challenge.

Morning Cup of Links: Alien Starchild

Miss Cellania

Should Teens Be Jailed for Sex Offenses?

World War I Centennial: The Socialist Menace

Erik Sass

Installment #3: After the Second Moroccan Crisis, Europe’s political and military leaders were hurriedly making preparations for a possible continent-wide war – but some of the fiercest power struggle

5 Doctor Who Stories Ripped From the Headlines

Calli Arcale

From its start in 1963, Doctor Who has heavily featured the future and the past -- but stories based on current events have also been part of the series.

Where Did the Term "Pink Slip" Originate?

Matt Soniak

Pink slip image via ShutterstockThe Short Answer: No one knows, but the search has been interesting.The Long Answer: Getting a pink slip usually means you're fired. It's not something most p

6 Amazing Animals That Practically Lived Forever

Kathy Benjamin

Here are six legendary animals that lived a lot longer than most pets.

Dietribes: Maple Syrup

Allison Keene

• It takes four maple trees that are at least 40 years old over six weeks to produce 35 to 40 gallons of maple sap, which equates to one gallon of maple syrup (which sells for about $50). • So what

10 Dirty Pictures

David K. Israel

He takes "wash me" to a whole new level.

Lectures for a New Year: The Divided Brain

Chris Higgins

In this eleven-minute animation, psychiatrist Iain McGilchrist explains how our notion of the hemispheres of the brain being ultra-separate is a drastic oversimplification, and has had consequences fo

Brain Game: Which Word?

Here's a new Wednesday Wordplay puzzle for today's mentalfloss.com Brain Game.

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