Pentheraphobia is the persistent fear of your mother-in-law.
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.
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?
Sexting didn’t start with smartphones.
Put these masterpieces on your playlist and you'll never hear music the same way again.
In case you weren't obsessively refreshing mentalfloss.com all week, here's what you missed.
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.
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?
There may be plenty of sibling athletes, but it's twice as nice for these 15 pairs of twins from the world of sports.