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 1341 / 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
How a fetus can turn to stone
Health

How a fetus can turn to stone

In incredibly rare medical cases, a severely miscarried fetus can become permanently trapped inside the mother's abdominal cavity instead of the uterus.…

Discover more
The brain injury that can create a gourmet obsession
Psychology

The brain injury that can create a gourmet obsession

Gourmand syndrome is a rare but documented condition where damage to the brain's right frontal lobe triggers an obsessive focus on fine dining. Patients who…

Discover more
Your avatar may change how you act offline
Psychology

Your avatar may change how you act offline

The Proteus effect proves that the appearance of your digital avatar subconsciously dictates your behavior in real time. Users assigned taller or more…

Discover more
Modern skyscrapers designed with giant holes for dragons
Myths & mysteries

Modern skyscrapers designed with giant holes for dragons

Many iconic towering skyscrapers throughout Hong Kong feature massive, empty rectangular holes right in the middle of their architecture. These empty spaces…

Discover more
The lawless city block that housed tens of thousands
Travel

The lawless city block that housed tens of thousands

Kowloon Walled City was an incredibly dense, unregulated urban settlement in Hong Kong, packing tens of thousands of residents into a single block of…

Discover more
Your blood type can change disease risk
Health

Your blood type can change disease risk

Your inherited blood type dictates significantly more than just who you can accept a transfusion from in emergencies. Certain blood groups inherently carry a…

Discover more
Grandmasters can play dozens of chess games blindfolded
Games

Grandmasters can play dozens of chess games blindfolded

Elite grandmasters of chess are capable of playing astonishing blindfold exhibitions against dozens of opponents simultaneously. By entirely relying on an…

Discover more
The Oscar statuettes that vanished before the ceremony
Culture & entertainment

The Oscar statuettes that vanished before the ceremony

Weeks before a massive Hollywood award ceremony, the shipping truck carrying fifty-five freshly cast golden statuettes mysteriously vanished. The priceless…

Discover more
The Maya made a blue that refuses to fade
History

The Maya made a blue that refuses to fade

The ancient Maya engineered an incredibly vivid blue pigment that has baffled scientists for centuries. Despite surviving brutal jungle humidity, harsh sun,…

Discover more
Chalk is made from ancient sea life
Science

Chalk is made from ancient sea life

The incredibly soft white sticks heavily utilized by eager schoolteachers to boldly write mathematical equations are fundamentally physically composed of…

Discover more
How Venice blocks high tides from its streets
Travel

How Venice blocks high tides from its streets

To protect its priceless historical architecture from severe rising sea levels, Venice constructed Project MOSE. This massive aquatic defense system uses a…

Discover more
Some early pacemakers needed a hand crank
Technology

Some early pacemakers needed a hand crank

Before the invention of compact, long-lasting lithium batteries, early cardiac pacemakers were incredibly inconvenient. Some experimental external versions…

Discover more
How lasers can listen through a window
Technology

How lasers can listen through a window

Intelligence agencies do not always need hidden microphones to eavesdrop. By bouncing an invisible infrared laser off a window pane, they can perfectly…

Discover more
Why you can jump after running off a ledge in games
Games

Why you can jump after running off a ledge in games

Platforming games actively employ a hidden mechanic called coyote time to make movement feel fair. When a digital character runs completely off the edge of a…

Discover more
How games secretly help you stop losing
Games

How games secretly help you stop losing

Many modern action games utilize dynamic difficulty adjustment behind the scenes. If the game detects that you are dying too frequently, the internal…

Discover more
The movie-set detectives who track every prop
Culture & entertainment

The movie-set detectives who track every prop

Script supervisors are the ultimate cinematic detectives employed directly on movie sets. Their sole obsessive duty is to perfectly track the exact length of…

Discover more
Why Frankenstein’s monster became green
Culture & entertainment

Why Frankenstein’s monster became green

The legendary, flat-headed undead movie monster created in the 1930s is culturally remembered as having sickly, pale green flesh entirely due to promotional…

Discover more
Why scientists still cannot fully explain anesthesia
Health

Why scientists still cannot fully explain anesthesia

Despite being safely administered to millions of surgical patients globally every single day, medical science still lacks a complete understanding of how…

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