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 205 / 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
Folding wooden luggage racks keep suitcases off the bed
Travel

Folding wooden luggage racks keep suitcases off the bed

The straps keep a suitcase off the bedspread, helping prevent dirt from wheels that have rolled over wet or muddy ground from getting on the bedding.

Discover more
Culture & entertainment

Elvis made 'Are You Lonesome Tonight?' with the studio lights out

Engineer Bill Porter recalled being unable to see what was happening as Elvis recorded. When the song shifted into spoken lines, Porter worried that the vocal…

Discover more
Apollo astronauts said Moon dust smelled like gunpowder
Transport

Apollo astronauts said Moon dust smelled like gunpowder

Moon dust had no smell in the vacuum outside; astronauts noticed the gunpowder-like odor after dusty suits came back into the cabin. The grit brought a little…

Discover more
When fear of work is more than Monday blues
Psychology

When fear of work is more than Monday blues

When the thought of work brings persistent fear, panic, or dread that disrupts daily life, it may be more than the ordinary dislike of Monday. Your mind can…

Discover more
Why three-legged races are so difficult
Transport

Why three-legged races are so difficult

The tied legs have to move as one while both runners balance and coordinate their free steps. The race is less about speed than negotiating a walking treaty…

Discover more
Why shower curtains cling to your legs
Travel

Why shower curtains cling to your legs

Hot water sets air moving inside the shower, creating a pressure difference that can pull the curtain inward against your legs.

Discover more
A jet ski steers by aiming the water it throws backward
Transport

A jet ski steers by aiming the water it throws backward

A pump draws in water and forces it out through a nozzle at the rear. Turning the handlebars redirects that jet, changing the force pushing the craft. The…

Discover more
Rubik's cube corners display exactly three colors
Games

Rubik's cube corners display exactly three colors

Each corner is a single piece with three colors, so those colors stay together no matter how you twist the cube.

Discover more
Why London has so many empty luxury homes
Economy

Why London has so many empty luxury homes

A luxury home can sit empty because its owner is using it to store wealth, not looking for a place to live. Some tycoons buy through anonymous shell companies…

Discover more
Table tennis once came in a box labeled Gossima
Games

Table tennis once came in a box labeled Gossima

Jaques marketed Gossima in 1891, among the early attempts to bring lawn tennis indoors. Early sets used equipment such as drumlike rackets and cork balls;…

Discover more
Epic Games was once called Potomac Computer Systems
Games

Epic Games was once called Potomac Computer Systems

Tim Sweeney started the company from his parents’ Maryland home and renamed it Epic MegaGames because “Potomac Computer Systems” sounded too small for an…

Discover more
Some transparent candy wrappers start as cellulose
Technology

Some transparent candy wrappers start as cellulose

Cellophane is made by processing cellulose into a thin, clear film. The same broad class of material that gives plant tissues structure can become a…

Discover more
Ape Escape made the old PlayStation controller useless
Games

Ape Escape made the old PlayStation controller useless

The 1999 game required a DualShock: one analog stick moved the character, while the other operated gadgets such as the monkey-catching net. A D-pad could not…

Discover more
Street Fighter profiles include fighters’ blood types
Games

Street Fighter profiles include fighters’ blood types

The profiles reflect a popular Japanese belief that blood type is linked to personality, so even fictional fighters get one.

Discover more
The tools designed not to spark
Science

The tools designed not to spark

Beryllium-copper tools are less likely than steel to throw hot sparks when struck, which can lower ignition risk in places with explosive hazards. But “less…

Discover more
Bananas produce tiny bursts of antimatter
Science

Bananas produce tiny bursts of antimatter

A little of a banana’s potassium is potassium-40, a naturally radioactive form that sometimes decays by releasing a positron. A positron is an electron’s…

Discover more
Strait of Gibraltar passenger ferries connect two continents
Transport

Strait of Gibraltar passenger ferries connect two continents

The Strait of Gibraltar separates Europe and Africa, and passenger ferries shuttle across it between Spain and Morocco. Two continents, one boat…

Discover more
Parts of Mexico City are sinking by about half a meter a year
Travel

Parts of Mexico City are sinking by about half a meter a year

Long-term measurements found subsidence reaching roughly 50 centimeters annually in some areas. Water loss lets the soft sediments beneath the city compact,…

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