Brain Game: Math Square #130

Good luck solving today's Monday Math Square Brain Game challenge: Place the digits 1 through 9 in the white blanks so that the mathematical equations work both across and down

Morning Cup of Links: Shopping Bear

Miss Cellania

England hasn't hosted the Olympics since 1948, but the Royal Family participates quite often.

Math Food for Pi Approximation Day

Miss Cellania

July 22 is Pi Approximation Day because pi's fractional approximation is 22/7.

Why Is Bird Poop White?

Matt Soniak

You, me, cats, dogs, horses, rabbits, deer, elephants and lots of other animals all make brown poop (most of the time, anyway).

Weekend Links: A Crocheted Playground

Allison Keene

Positively brilliant - The Sound and the Fury as William Faulkner imagined, in color.

25 Fictional Characters Posing With mental_floss

Jill Harness

You've already seen celebrities posing with Mental Floss at the Motor City Comic Con, but have you ever wondered whether your favorite fictional characters would enjoy the magazine?

Why Videos Go Viral

Chris Higgins

Kevin Allocca is the "trends manager" at YouTube, which means, as he says, he watches YouTube videos for a living -- and then thinks about why they become popular.

18 Independent Artists at Comic Con 2012

Jill Harness

Back in 2010, we introduced you to some of the many talented artists at the San Diego Comic Con. So how have things changed in the last two years?

Last Week's Most Popular Stories

Jason English

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

How Many Spider-Men Can Fit Inside a Jamba Juice?

Chris Higgins

On May 8, 2007, David Letterman asked perhaps the least important question any man could have asked: "How many guys in Spider-Man suits can fit into a Jamba Juice restaurant in New York City?&qu

Weekend Links: Google Street View - Antarctica

Allison Keene

Using the noggin: how to successfully store passwords in your subconscious. * I positively loved this beautiful video of a person who "plays a strangely tuned guitar in a language that we can a

Music History #3: "Yes! We Have No Bananas"

Bill DeMain

Editor's Note: This is the third installment of Bill DeMain's new column, where he explores the real historical events that inspired various songs.

The Final Harry Potter Book Came Out Five Years Ago Today

Jason English

Harry Potter and the Deathly Hallows was released at 12:01am on July 21, 2007. Celebrate the book's wood anniversary with a few Hogwarts-related quizzes from the

Harriet Tubman's Perfect Record: Brains and Opium on the Underground Railroad

Erik Sass

How did Harriet Tubman lead so many slaves to freedom on the Underground Railroad? With careful planning, plenty of luck, and a little opium.

The Late Movies: Time Lapse Garden

Miss Cellania

Oh, I'm still knee-deep in tomatoes and beans, and the rest of the garden is coming along nicely, too!