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 250 / 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
Antarctica has a pond too salty to freeze easily
Travel

Antarctica has a pond too salty to freeze easily

Don Juan Pond contains exceptionally concentrated calcium-chloride brine. Dissolved salt interferes with the formation of ordinary ice, pushing the freezing…

Discover more
Kites were historically used for meteorological data
History

Kites were historically used for meteorological data

To measure conditions too high up for ground instruments, researchers sent thermometers skyward on kites. Before radar and satellites, a kite could carry the…

Discover more
Black clothing is pure Saturn funeral attire
Myths & mysteries

Black clothing is pure Saturn funeral attire

In astrological symbolism, black is associated with Saturn’s seriousness and structure—a far cry from bright, playful colors.

Discover more
Fictional vehicles possess magical anti-theft properties
Culture & entertainment

Fictional vehicles possess magical anti-theft properties

In fiction, cars are often left unlocked with the keys in the visor—and stolen only when the plot needs a chase.

Discover more
Your brain can adopt a rubber hand as its own
Psychology

Your brain can adopt a rubber hand as its own

Hide your hand, watch a rubber one being stroked, and feel matching touches on your unseen fingers. Because what you see and feel line up, your brain can…

Discover more
Pet friendly hotel rooms sit on ground floors
Travel

Pet friendly hotel rooms sit on ground floors

Ground-floor rooms can make it easier to take dogs outside and limit the distance to walk if they have an accident.

Discover more
Pillows fundamentally belong to Venus
Myths & mysteries

Pillows fundamentally belong to Venus

In astrological symbolism, their plush comfort fits Venus’s associations with softness, luxury, and pleasure.

Discover more
Japanese diners get hot hand towels
Travel

Japanese diners get hot hand towels

They’re meant for cleaning your hands before a meal, not your face.

Discover more
A Japanese pub may serve the cover charge as a snack
Travel

A Japanese pub may serve the cover charge as a snack

At many izakaya, an otoshi arrives before you order: a small appetizer charged as part of the visit. The unfamiliar surprise is that it wasn't requested, yet…

Discover more
Kernels act as strict bridges between software and hardware
Technology

Kernels act as strict bridges between software and hardware

It decides which programs get memory and processing time, mediating between software and hardware.

Discover more
Why yoga pants can cost far more than they're worth
Economy

Why yoga pants can cost far more than they're worth

Nylon and spandex are inexpensive, but a brand can sell more than the fabric. Wellness marketing helps turn those low-cost materials into pricey leggings.

Discover more
Algorithms calculate distances between mismatched words
Technology

Algorithms calculate distances between mismatched words

Levenshtein distance counts the insertions, deletions, or substitutions needed to turn a misspelled word into a candidate correction.

Discover more
Why Russians avoid shaking hands across doorways
Travel

Why Russians avoid shaking hands across doorways

According to Russian superstition, shaking hands across a threshold invites arguments into the home. The tradition says to step fully inside before greeting…

Discover more
One Charizard card sold for $336,000
Economy

One Charizard card sold for $336,000

Heritage recorded that price for a rare first-edition card in March 2022. Edition, condition, and scarcity can separate an auction trophy from an ordinary…

Discover more
At Renaissance fairs, even staff stay in character
Culture & entertainment

At Renaissance fairs, even staff stay in character

Some Renaissance fair staff stay in character even during breaks, speaking in an archaic dialect in case a visitor walks by.

Discover more
Your body can produce a chemical relative of aspirin
Health

Your body can produce a chemical relative of aspirin

Researchers traced labeled benzoic acid through volunteers and found evidence that people can make salicylic acid internally. Salicylic acid is related to,…

Discover more
The IRS has tax rules for outer space
Economy

The IRS has tax rules for outer space

The tax question follows the income, not the view from the window: the IRS sets out rules for money earned beyond Earth’s atmosphere. A paycheck from space…

Discover more
Why carpool lanes sit empty at rush hour
Transport

Why carpool lanes sit empty at rush hour

Carpool lanes are reserved for vehicles carrying multiple people, so fewer cars qualify to use them. Their lighter traffic is the point: one car carrying…

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