stackyFACTS
STAY CURIOUS

The world is more interesting than you think.

Unexpected facts, big ideas, and little discoveries. Find something that sparks your curiosity today.

34,160 facts11 topics to exploreStart exploring ↓
YOUR NEXT DISCOVERY

A little more wonder

Page 949 / 1424
STACKY FOR IPHONE

A bigger world.
One discovery
at a time.

Keep discovering with Stacky. Interesting facts in an app that is always within reach.

Download on the App Store
Dropping gloves supposedly meant a new romance was coming
Myths & mysteries

Dropping gloves supposedly meant a new romance was coming

In an old romantic superstition, dropping a glove was taken as a sign that a passionate relationship was near.

Discover more
An ebook license can wear out without the file wearing out
Culture & entertainment

An ebook license can wear out without the file wearing out

In 2011, HarperCollins introduced a 26-loan limit for certain library ebook licenses. After that, the library needed another license to keep lending the…

Discover more
Autotune began as a search for underwater oil
Technology

Autotune began as a search for underwater oil

An acoustic researcher adapted the math used to map seismic waves to detect and correct off-key notes.

Discover more
Why one missing comic shipment could ruin a shop
Culture & entertainment

Why one missing comic shipment could ruin a shop

For decades, local shops relied on a single, inflexible distributor, so one missing box could leave an entire region without its weekly comics.

Discover more
Snowmobile treads are essentially giant rubber belts
Transport

Snowmobile treads are essentially giant rubber belts

A snowmobile’s rubber track loops around the rear like a huge conveyor belt, with raised lugs biting into snow. Its wide footprint spreads the machine’s…

Discover more
Blacksmiths were considered powerful due to iron shaping
Myths & mysteries

Blacksmiths were considered powerful due to iron shaping

Transforming raw ore into tools in a blazing forge gave blacksmiths a reputation for unusual power among people without the skill to do it themselves.

Discover more
An unsold paperback can be returned without its pages
Culture & entertainment

An unsold paperback can be returned without its pages

For eligible mass-market books, a retailer sends back the stripped cover as proof for a credit, while the remaining book is destroyed. Shipping a thin cover…

Discover more
Why wealthy Victorians collected tiny spoons
Travel

Why wealthy Victorians collected tiny spoons

Wealthy Victorians collected ornate miniature spoons from trips abroad, turning unusual souvenirs into a fashionable status symbol.

Discover more
Why your phone downloads audio at midnight
Culture & entertainment

Why your phone downloads audio at midnight

Phones may sync RSS audio feeds while plugged in, often overnight, so downloads can appear around midnight even when nobody is listening.

Discover more
Why people once played leapfrog for the harvest
Games

Why people once played leapfrog for the harvest

Some ancient pagans believed leaping over a hunched person would help ensure a successful harvest.

Discover more
Comic-book capitals make crowded speech easier to arrange
Culture & entertainment

Comic-book capitals make crowded speech easier to arrange

Uppercase letters give hand-lettered dialogue a more consistent height, without lowercase descenders hanging below the line. That helps a letterer fit words…

Discover more
A hotel room has another shift between guests
Travel

A hotel room has another shift between guests

After checkout, housekeeping needs to clean, replace linens, restock supplies, and inspect the room before the next arrival. Laundry is only one part of that…

Discover more
Why Floor Is Lava endangers the furniture
Games

Why Floor Is Lava endangers the furniture

Treating the floor as molten lava turns coffee tables and sofas into stepping-stones, prompting kids to leap across furniture that may not survive the game.

Discover more
Why we pay to see celebrities look miserable
Economy

Why we pay to see celebrities look miserable

A glamorous celebrity caught looking miserable or unkempt gives readers a glimpse of someone else having a bad day. Paparazzi photos sell because that glimpse…

Discover more
Call of Duty's zombie mode was a secret
Games

Call of Duty's zombie mode was a secret

The mode unlocked only after players finished the World War II campaign, with no prominent advertising to give it away.

Discover more
Pogs started as milk caps
Games

Pogs started as milk caps

The game began with decorated cardboard caps that sealed dairy beverages in Hawaii. Children later turned them into targets for heavy plastic slammers.

Discover more
Why WD-40 is called WD-40
Science

Why WD-40 is called WD-40

“WD” describes the job: the product was designed to displace water. The “40” marks the formula that finally worked after 39 earlier attempts. What sounds like…

Discover more
Hollowed out books act as functional covert storage spaces
Culture & entertainment

Hollowed out books act as functional covert storage spaces

A hollowed-out book can conceal valuables, emergency cash, or other small items while blending into a bookshelf.

Discover more
StackyMore discoveries in the app
Download on the App Store