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 347 / 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
A helpful gesture can carry an unintended message
Travel

A helpful gesture can carry an unintended message

Holding a door for whoever is behind you is easy to read as practical courtesy. Offering help only to a particular group can also suggest an assumption about…

Discover more
Tessellation puzzles have absolutely no fixed borders
Games

Tessellation puzzles have absolutely no fixed borders

Repeating geometric shapes can extend a tessellation indefinitely in every direction, leaving no corner pieces or clear point at which the puzzle is finished.

Discover more
Ordinary table salt was viewed as the physical body
Myths & mysteries

Ordinary table salt was viewed as the physical body

In a historical triad, salt stood for the physical body, valued for its stability and permanence.

Discover more
Duodenum forcefully mixes stomach output with enzymes
Health

Duodenum forcefully mixes stomach output with enzymes

As stomach contents enter the duodenum, they are still acidic. The duodenum blends them with neutralizing agents and enzymes, changing the mixture before it…

Discover more
Leap year babies receive weird app updates
Myths & mysteries

Leap year babies receive weird app updates

Some astrology apps mishandle February 29, leaving leap-day birthdays out of digital horoscopes or causing the apps to skip dates or crash.

Discover more
The diet drink made from horns and hooves
Health

The diet drink made from horns and hooves

Prolinn turned crushed horns and hooves into a liquid supplement with artificial cherry flavor. Its diet plan cut food so severely that people were…

Discover more
Why Janissaries overturned their cooking pots
History

Why Janissaries overturned their cooking pots

An overturned cauldron was more than a complaint about pay: it signaled collective protest from the Janissaries, whose defiance could threaten the sultan’s…

Discover more
Why friendly fire doesn't hurt your allies
Games

Why friendly fire doesn't hurt your allies

The game treats allies as immune to your tactical strikes, so even a direct hit leaves them unharmed.

Discover more
Nekomata flaunt distinctly split feline tails
Myths & mysteries

Nekomata flaunt distinctly split feline tails

In Japanese folklore, an old cat could become a nekomata, marked by a tail that splits in two; legends also credit it with setting fires.

Discover more
Screws hold things together by converting rotation to push
Technology

Screws hold things together by converting rotation to push

Its spiral thread acts like an inclined plane wrapped around a cylinder: turning the screw converts rotation into forward force that clamps materials together.

Discover more
Zosimos claimed his esoteric recipes came from weird dreams
Myths & mysteries

Zosimos claimed his esoteric recipes came from weird dreams

He recorded elaborate, sometimes disturbing dreams that he believed revealed advanced chemical techniques.

Discover more
Emanuel Swedenborg tracked his sneeze patterns
Myths & mysteries

Emanuel Swedenborg tracked his sneeze patterns

He kept a detailed diary of his sneezing fits, treating them as markers of mystical progress.

Discover more
Gold objects centralize your entire personal focus
Myths & mysteries

Gold objects centralize your entire personal focus

In astrological doctrine, gold is said to center a person's energy around the self, linking the metal with ego and personal focus.

Discover more
How supercomputers can heat people's homes
Technology

How supercomputers can heat people's homes

Facilities in places like Sweden and Switzerland pipe excess heat from data processing into municipal heating grids instead of venting it.

Discover more
Air elements easily detach from highly emotional situations
Myths & mysteries

Air elements easily detach from highly emotional situations

In elemental astrology, air signs are portrayed as detached from intense emotions, more likely to pull away than offer comfort when someone cries.

Discover more
A Golden Balls contestant threatened to steal—and then split
Culture & entertainment

A Golden Balls contestant threatened to steal—and then split

Nick told Ibrahim he would choose steal and share the money afterward, trying to make Ibrahim's split seem like the only useful option. When the choices were…

Discover more
Tarmac pathways are strictly mapped for safety
Transport

Tarmac pathways are strictly mapped for safety

Runway and taxiway markings give pilots a shared map of where aircraft move and where they wait. Clear routes reduce wrong turns and runway conflicts; the…

Discover more
Shigetaka Kurita created the original set of one hundred seventy six emojis in the year 1999
Technology

Shigetaka Kurita created the original set of one hundred seventy six emojis in the year 1999

Each icon fit a 12-by-12-pixel grid and was designed to make pager weather forecasts and messages easier to understand.

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