Homepage MF slider

Pages

THE KNOWLEDGE FEED

Pages

The Mystery of the Missing Money

Clay Wirestone

The Federal Reserve tells us that more than $1.2 trillion worth of paper money is in circulation. In fact, there is $3774 in cash for every American.

San Francisco, Before and After the 1906 Fire

Chris Higgins

Gold Medalist Alex Morgan Demonstrates Lip Tips [Sponsored]

Why Is Ice Slippery?

DeAnna Kerley

If you’ve ever shakily stepped onto the ice at your local skating rink, you are intimately familiar with the fear of falling on slippery ice. But what makes ice so slippery in the first place?

11 Sexting Acronyms From the 1930s

Alyson Sheppard

Sexting didn’t start with smartphones.

8 Pieces That Will Change the Way You Hear Music

Put these masterpieces on your playlist and you'll never hear music the same way again.

Morning Cup of Links: The Other Batman Villains

Miss Cellania

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: Happy 113th Birthday to You

Roma Panganiban

700 Hot Air Balloons (Timelapse)

Chris Higgins

10 Facts About Poison

Erin McCarthy

This weekend, New York City’s American Museum of Natural History opens its latest exhibit, The Power of Poison. We went to a preview of the exhibit; here are just a few things we learned.

Weekend Links: Other Heart-Melting Wishes

Roma Panganiban

8 Tech Companies That Turned Down Huge Buyouts

DeAnna Kerley

This week Snapchat founders Evan Spiegel, 23, and Bobby Murphy, 25, made headlines by rejecting a reported $3 billion offer from Facebook. Will they regret it?

Tonight: "The Challenger Disaster" on Science and Discovery Channels

Chris Higgins

15 Sets of Athletic Twins

Jason Plautz

There may be plenty of sibling athletes, but it's twice as nice for these 15 pairs of twins from the world of sports.

Pages