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 1302 / 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
Sneaking illicit goods across borders in hidden panels
Economy

Sneaking illicit goods across borders in hidden panels

To get illicit goods past customs, smugglers may hide them behind panels built into a vehicle. The car itself becomes the concealment.

Discover more
A thermal receipt can fade without ever using ordinary ink
Economy

A thermal receipt can fade without ever using ordinary ink

Many receipt printers darken a heat-sensitive coating on the paper instead of depositing ink from a cartridge. Heat, light, and storage conditions can alter…

Discover more
Paying a stranger in a tiny booth just to drive on a road
Transport

Paying a stranger in a tiny booth just to drive on a road

That booth is the road’s checkout counter: drivers pay a toll, and the money helps fund the route they’re using. The attendant collects a few seconds of your…

Discover more
Letting stern officials rummage through your personal bags
Travel

Letting stern officials rummage through your personal bags

The checks are meant to keep unauthorized agricultural products from crossing international borders.

Discover more
Pet taxidermy preserves the appearance more than the body
History

Pet taxidermy preserves the appearance more than the body

A taxidermist generally prepares the animal's skin and arranges it over a shaped form, using artificial eyes and other finishing materials. Recreating a…

Discover more
Flipping silver spheres away from a dark drain hole
Games

Flipping silver spheres away from a dark drain hole

The goal is to keep each ball in play with the flippers; let one fall through the drain and you’ll need another quarter to keep playing.

Discover more
Concealing your body behind curtains while someone counts
Games

Concealing your body behind curtains while someone counts

Concealing your entire body behind a living room curtain while someone loudly counts to ten is the pinnacle of childhood stealth operations.

Discover more
Wrapping dead Pharaohs in miles of incredibly old linen
History

Wrapping dead Pharaohs in miles of incredibly old linen

Mummifiers dried the bodies with salt, then wound them in linen layer after layer. The wrapping helped prepare the dead for the afterlife—and turned…

Discover more
Blaming dead livestock on a mythical vampire creature
Myths & mysteries

Blaming dead livestock on a mythical vampire creature

In folklore, undines are bound to rivers or streams, so venturing far inland risks their dissolving.

Discover more
Stacking millions of heavy stones to build a giant tomb
History

Stacking millions of heavy stones to build a giant tomb

Workers hauled the blocks across difficult terrain to build a monumental tomb for a ruler regarded as divine.

Discover more
Unplugging a flash drive is safe only after writing stops
Technology

Unplugging a flash drive is safe only after writing stops

A file transfer can appear finished while data is still waiting to be written to the drive. Safe removal asks the operating system to finish pending work…

Discover more
Why standing straight can make you look taller
Health

Why standing straight can make you look taller

Slouching bends your posture and makes your torso look more compressed. Straightening up lengthens the line of your frame, so you can appear taller without…

Discover more
Your loading bar may be making the time up
Technology

Your loading bar may be making the time up

Many loading bars are estimates, not live measurements: they guess how long a task will take and animate a bar to match.

Discover more
Ancient baldness cures used pigeon droppings
Health

Ancient baldness cures used pigeon droppings

Some ancient remedies called for rubbing pigeon droppings into the scalp, in the hope that the treatment would bring hair back. The striking ingredient tells…

Discover more
Broadway theaters leave a ghost light after shows
Culture & entertainment

Broadway theaters leave a ghost light after shows

The bulb provides enough light to keep people from tripping onstage; actors also say it keeps the theater’s ghosts happy.

Discover more
A landmark emoji set fit each picture into just 144 pixels
Technology

A landmark emoji set fit each picture into just 144 pixels

Shigetaka Kurita designed 176 symbols for NTT DOCOMO's mobile service, released in 1999. Each used a twelve-by-twelve grid, yet the set conveyed weather,…

Discover more
Why crowds can leave introverts physically exhausted
Psychology

Why crowds can leave introverts physically exhausted

At a party, an introvert may be quietly tracking who’s talking, when to jump in, and how to keep up with several conversations at once. That constant social…

Discover more
When bad jokes were answered with rotten fruit
Culture & entertainment

When bad jokes were answered with rotten fruit

Ancient audiences could answer a joke they hated by hurling rotten fruit and other garbage at the performer.

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