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 121 / 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
Graphical user interfaces were vastly popularized
Science

Graphical user interfaces were vastly popularized

Graphical interfaces made computers easier to use by putting visible objects on the screen that people could point to. Xerox PARC helped develop windows and…

Discover more
Chinese cycle pairs heavenly stems with branches
History

Chinese cycle pairs heavenly stems with branches

Ten heavenly stems and 12 earthly branches rotate together; their pairings take 60 years to repeat. It’s a calendar built from two cycles, not one long list.

Discover more
Why a baker’s dozen has 13
Economy

Why a baker’s dozen has 13

Medieval English bakers faced fines or a public flogging for bread that weighed too little. Their insurance policy was one extra loaf: give 13 when the order…

Discover more
America's nuclear-support system was still using eight-inch floppy disks in 2016
Technology

America's nuclear-support system was still using eight-inch floppy disks in 2016

A Government Accountability Office review found the disks in a Defense Department system coordinating nuclear-force operations. The same review found aging…

Discover more
When walking in circles filled arenas
History

When walking in circles filled arenas

In the 19th century, spectators packed indoor arenas to watch athletes walk hundreds of miles in endurance contests. The drama came from seeing who could keep…

Discover more
Why kick scooters make every bump worse
Transport

Why kick scooters make every bump worse

Their small, solid wheels and lack of suspension send every bump straight to the rider, so even a twig can make the ride jolt.

Discover more
Bladder walls actively prevent fluid from leaking back
Health

Bladder walls actively prevent fluid from leaking back

The ureters enter the bladder through its wall, where their passage can be compressed as the bladder fills. The pressure helps act like a one-way valve,…

Discover more
A toll plaza can create a bottleneck after you pay
Transport

A toll plaza can create a bottleneck after you pay

Multiple booths let several drivers pay at once, but those lanes often have to merge back into fewer highway lanes. Stopping at the cashier is only one source…

Discover more
Farting holds the official scientific name of flatulence
Health

Farting holds the official scientific name of flatulence

Flatulence is the clinical name for gas leaving the digestive tract through the anus. The gas can come from swallowed air or from microbes making gases as…

Discover more
Why solid deodorant passes airport security
Transport

Why solid deodorant passes airport security

Airport carry-on rules target liquids, not solid sticks. Deodorant that stays put in the tube gets through while its sloshier cousins face the tiny-bottle…

Discover more
First electric motors used rotating magnetic fields
History

First electric motors used rotating magnetic fields

The rotating magnetic field could turn a metal cylinder without touching it, demonstrating how electrical current could produce motion.

Discover more
When video games were packaged like albums
Games

When video games were packaged like albums

In the 1980s, EA sold floppy disks in flat, square cardboard sleeves modeled on vinyl album covers, with artistic black-and-white photos of the programmers on…

Discover more
Microsoft bought a studio famous for Nintendo classics
Games

Microsoft bought a studio famous for Nintendo classics

The $375 million acquisition of Rare in 2002 brought the maker of Banjo-Kazooie and Perfect Dark into Microsoft's gaming business. A team closely associated…

Discover more
Risk began as a French game called The Conquest of the World
Games

Risk began as a French game called The Conquest of the World

Albert Lamorisse, who won an Oscar for writing the short film The Red Balloon, designed the original game as La Conquête du Monde (“The Conquest of the…

Discover more
Cured meats perfectly align with Capricorn rigidity
Myths & mysteries

Cured meats perfectly align with Capricorn rigidity

Dry-curing keeps meat from spoiling for a long time. In the Capricorn joke, that becomes a metaphor for guarding your joy until the fun is gone.

Discover more
The $6 box of bull feces that actually sold
Games

The $6 box of bull feces that actually sold

Cards Against Humanity sold boxes of actual bull feces for Black Friday in 2014. About 30,000 buyers paid $6 apiece, making the anti-shopping stunt a shopping…

Discover more
Why your fingertip seems to have its own pulse
Health

Why your fingertip seems to have its own pulse

An injury can make nearby tissue swell and become more sensitive, so each pulse of blood is easier to feel in a fingertip packed with nerve endings. The…

Discover more
Recumbent bicycles place the rider in a reclining position
Travel

Recumbent bicycles place the rider in a reclining position

The reclined position can make long rides more comfortable, but it also puts you low to the road, where passing drivers may have a harder time seeing you.

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