THE KNOWLEDGE FEED

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And We're Back

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Brain Game: Math Square #14

The nine white squares inside the main red grid should be filled with the digits 1 through 9. Each digit should appear only once in this main grid. Two of these numbers are already provided for you.

Morning Cup of Links: A Rare Stair

Miss Cellania

So many reasons why the internet will fail. A essay from 1995 bemoans the lack of all the things we've managed to come up with since then. (via Boing Boing) * How to wash your hedgehogs.

The Weekend Links: Sunday Edition

Allison Keene

You never know what secret passions people have, and where it will lead them. For instance, did you know Sir Isaac Newton invented the Cat Door?

This Week's Most Popular Stories

Jason English

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

Memories of the Olympic Village

Bud Shaw

Every Olympic city provides separate housing for the world's media and an Olympic Village for the athletes, coaches and team officials. By most accounts, Vancouver's Olympic housing is a

Remembering Mister Rogers

Jason English

It was seven years ago today that we lost Mister Rogers.

The Weekend Links: Saturday Edition

Allison Keene

Looks like the blind cross-country skier we profiled this week won't be competing in the Olympics after all. * How well did you sleep last night?

The 10 Most Important Kisses in the Universe

the mag

Our 9th annual '10 Issue' hits newsstands this week. To celebrate, here's an article from last year's edition. By Maggie Koerth-Baker Get ready for a little kiss and tell.

SNEAK PEEK #4: Rice-A-Roni, The Not-So Frisco Treat?

Mangesh Hattikudur

If you're looking for some great facts on foods, the new 10 Issue (which hits bookstores this Tuesday!) has you covered.

Lunchtime Quiz Leftovers

Jason English

Layer Up! Buy 2 T-Shirts, Get 1 Free!

Jason English

OK, it's not exactly t-shirt weather.

motionbox.com presents: HDYK? - {day 4}

David K. Israel

It's an all-new 5-day trivia hunt! Co-puzzle Master Josh Halbur and I are happy to bring you the next How Did You Know? sponsored by the extraordinary video sharing site motionbox.com.

Symphony of Science - The Poetry of Reality (An Anthem for Science)

Chris Higgins

Yes, it's that time again -- another auto-tuned science video has hit the interwebs!

The Famous Branches of Your Family Tree

Jason English

Every Friday, I post a series of unrelated questions meant to spark conversation in the comments. Answer one, answer all, respond to someone else's reply, whatever you want. Very casual.

Truth or Fail: the YouTube Game Show

Ransom Riggs

You may remember John Green, former Floss writer, successful young adult novelist, and 1/2 -- along with his brother Hank -- of the YouTube vlogging sensation known as Brotherhood 2.0.

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