Brain Game: Math Square #24

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: Meowmania

Miss Cellania

Mind in the Water: The dolphin as our beast of burden. The story of the intelligent cetacean and the man who introduced them to both the hippie culture and the military.

The Weekend Links: Sunday Edition

Allison Keene

Happy Mother's Day!

The Weekend Links: Saturday Edition

Allison Keene

For all of my fellow tiny-apartment dwellers out there, watch as this 330-square-foot apartment is transformed into 24 separate rooms!

Win a Copy of Lost States!

Jason English

All week, Mike Trinklein has been sharing stories from his fascinating new book Lost States (you can read the excerpts here). Today we're giving you a chance to win a copy.

Lunchtime Quiz Leftovers

Jason English

New Shirts Are In! All Shirts $14.90!

Mangesh & Jason

We're excited to announce that three new shirts are now available in the mental_floss store!

The Late Movies: Mother's Day

Miss Cellania

Here's a collection of Mother's Day videos: funny, happy, sappy, and musical. These will put you in the proper mood for the holiday. Treat Your Mother Right Mr.

The Quick 10: 10 Notable Happy Meal Toys

Stacy Conradt

It's been a long time since I've gotten a Happy Meal toy, but back in the day, I collected them like they were going to be worth millions some day.

Evidence: Shots of Kids Watching TV

Chris Higgins

Evidence is a short film by Godfrey Reggio, director of Koyaanisqatsi, showing kids watching TV, from the perspective of the TV.

Books You Just Can't Get Through

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.

Amazing Color Photos from WWI

Ransom Riggs

You may remember a post I did awhile back about amazing color photos from WWII, a series of really artful, beautiful slides of life at home and in the army around 1943.

Lost States: Cuba?

Special Guest Star

We're thrilled to welcome Mike Trinklein, the author of Lost States: True Stories of Texlahoma, Transylvania, and Other States That Never Made It.

Behind the Lens of Animal Eyes

Jill Harness

Have you ever wondered why a goat has square pupils, or how bugs can see through their strange compound eyes?

The Weird Week in Review

Miss Cellania

Easy Come, Easy Go Kenneth Lamoree of Solvay, New York won $3,200 at a casino Monday night. Only about an hour after he arrived home on Tuesday morning, a fire broke out at his house.