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 892 / 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
The internet runs on networks trusting each other
Transport

The internet runs on networks trusting each other

Each internet provider tells neighboring networks which routes lead to which addresses. Those neighbors pass the directions onward, so data hops from network…

Discover more
Oral piercings can crack your back teeth
Health

Oral piercings can crack your back teeth

When you bite down on an oral piercing, the bead becomes a tiny, hard object caught between your teeth. A strong bite can chip or crack a tooth, and severe…

Discover more
Premium streaming tiers still force aggressive advertisements
Culture & entertainment

Premium streaming tiers still force aggressive advertisements

Some streaming subscriptions still interrupt paid content with unskippable ads, bringing platforms revenue from both monthly fees and advertising.

Discover more
Showing up sick destroys company productivity
Economy

Showing up sick destroys company productivity

Coming to work sick can hurt twice: the employee works below capacity, and coworkers may catch the illness. One person’s reduced output can become a team…

Discover more
Your guitar amp’s reverb may come from metal springs
Technology

Your guitar amp’s reverb may come from metal springs

That iconic, wet surf-rock echo is quite literally just the sound of springs violently shaking in a metal box. Amplifiers send the audio signal into a…

Discover more
That digital billboard may know you drove past
Culture & entertainment

That digital billboard may know you drove past

Some digital billboards can use location data from nearby phones to estimate how many devices were exposed to an ad.

Discover more
Cheek plumpers reshaped faces from inside the mouth
History

Cheek plumpers reshaped faces from inside the mouth

These cosmetic inserts pushed the cheeks outward to create a fuller face. Surviving examples appear in the Science Museum's collection alongside false…

Discover more
Early VHS let a movie outlast Betamax's tape limit
Technology

Early VHS let a movie outlast Betamax's tape limit

Sony's original consumer Betamax format recorded about an hour, while early VHS offered longer recording time. Picture quality was only one part of the buying…

Discover more
How perfume crosses an entire room
Transport

How perfume crosses an entire room

Perfume molecules drift through the air, and tiny air currents carry them across the room. Your nose gets the message before the scent has finished its grand…

Discover more
Vintage travel guides graded locations with stars
Travel

Vintage travel guides graded locations with stars

His red guidebooks became so trusted that “Baedeker” came to mean a guidebook.

Discover more
Why clearing your throat can make the tickle worse
Health

Why clearing your throat can make the tickle worse

Each throat-clear rubs the tissue around your voice box, and repeated rubbing can leave it mildly swollen. That swelling feels like a blockage, so you clear…

Discover more
Wisdom teeth can get trapped before they fully emerge
Health

Wisdom teeth can get trapped before they fully emerge

A tooth without enough room may remain beneath the gum or come through only partly, leaving a hard-to-clean pocket. That can lead to decay or repeated…

Discover more
Why brands invent fictional spokespeople
Culture & entertainment

Why brands invent fictional spokespeople

A fictional mascot lets a brand avoid the scandals that can follow a human spokesperson while building an emotional connection with younger audiences.

Discover more
The dance contests that lasted for hundreds of hours
History

The dance contests that lasted for hundreds of hours

In 1920s and ’30s dance marathons, partners competed to stay on the floor for days. If one collapsed, the other could drag the limp partner along—less…

Discover more
How strobe lights make motion look frozen
Technology

How strobe lights make motion look frozen

Rapid flashes illuminate only brief slices of motion. At the right frequency, they can make a spinning fan or dancer appear frozen.

Discover more
Why wealthy people changed shirts four times a day
History

Why wealthy people changed shirts four times a day

Fresh undershirts offered a visible way to signal cleanliness—and wealth. Some people changed four times a day, turning a basic layer of clothing into a…

Discover more
More pockets can make a bag harder to search
Travel

More pockets can make a bag harder to search

Compartments help when each has a clear job. When several look alike, finding one small object means remembering which of many possible locations you chose.…

Discover more
Glowing weak spots dictate exactly where to shoot foes
Games

Glowing weak spots dictate exactly where to shoot foes

The enemy's vulnerable organs are marked with bright colors, turning the weak spot into a giant neon bullseye.

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