Mental Floss

LISTS

From disappearing ink to being written in code to needing a team to turn a page, these books are, for one reason or another, basically unreadable.

Lorna Wallace








Special equipment, lifestyle changes, and even readjusting your body can make nights more peaceful for your entire household.

Michele Debczak
Another openin', another show ...

From the time Mae West got arrested mid-performance to the 'Carrie' musical that failed in spectacular fashion, here's what you need to know about the weird and wonderful history of the Great White Way.

Ellen Gutoskey
French gunners during World War I, circa 1914.

We're shedding light on some common misconceptions about World War I, including who was actually involved and when the fighting officially ended.

Ellen Gutoskey
Max Pacioretty lies on the ice after being body-checked by Zdeno Chara.

As the Stanley Cup Playoffs get underway, here's a look back at the sport’s most brutal injuries—and how they made the game safer.

Erin McCarthy


Mount Everest at sunrise

Mount Everest is the tallest and highest peak on Earth. Or is it? Here’s everything you need to know about the world’s most famous mountain.

M. Arbeiter




Though he wasn’t fond of swearing, Theodore Roosevelt didn't always speak softly—he was capable of delivering a brutal insult when he felt it was appropriate.

Erin McCarthy










The familiar sight of a Costco Wholesale store.

From nail polish bans to free Thanksgiving turkeys, several Costco employees shared what it's really like to work at the world’s coziest warehouse.

Jake Rossen