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 1207 / 1424
Why a sauna sends your heart rate soaring
Health

Why a sauna sends your heart rate soaring

The sauna makes your heart race because your body is trying to cool itself. It widens blood vessels and routes more blood to the skin, where heat can escape;…

Discover more
Moscow put a Cold War command bunker far below its streets
Travel

Moscow put a Cold War command bunker far below its streets

Bunker-42 was built deep underground as a protected command facility. Its depth and enclosed systems were meant to keep essential functions operating in…

Discover more
Port of Los Angeles relies on chaotic intermodal chassis pools to keep containers moving
Transport

Port of Los Angeles relies on chaotic intermodal chassis pools to keep containers moving

A chassis is the wheeled frame that carries a shipping container, and a shared pool lets trucking companies borrow one instead of bringing their own. But…

Discover more
Wayne Campbell appeared on Canadian TV before Saturday Night Live
Culture & entertainment

Wayne Campbell appeared on Canadian TV before Saturday Night Live

Mike Myers played the character on CBC's It's Only Rock & Roll in 1987. Wayne then moved into Saturday Night Live sketches and eventually a movie. The…

Discover more
In the Aztec market, cheating customers could be fatal
History

In the Aztec market, cheating customers could be fatal

The Tlatelolco market had a tribunal of elite merchants to regulate trade. Sellers caught using false measures or selling stolen goods could be beaten to…

Discover more
Key of Solomon rituals demand virgin parchment and lion blood to successfully bootstrap magic tools
Myths & mysteries

Key of Solomon rituals demand virgin parchment and lion blood to successfully bootstrap magic tools

The rites prescribe materials such as virgin parchment and lion's blood, along with carefully timed planetary alignments and weeks of purification, before…

Discover more
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
Venice once hunted glassmakers who tried to escape
History

Venice once hunted glassmakers who tried to escape

Venice confined glassmakers to Murano to protect its trade secrets, then treated escape as a threat to the state. The Council of Ten could send bounty hunters…

Discover more
This dinner show sells deliberately disastrous service
Culture & entertainment

This dinner show sells deliberately disastrous service

Faulty Towers The Dining Experience puts guests inside a meal served by performers playing Basil, Sybil and Manuel. Much of the show is improvised around the…

Discover more
What ultra-processed food may do to teenage brains
Health

What ultra-processed food may do to teenage brains

Ultra-processed sugary foods may contribute to inflammation, which can affect the hippocampus—the brain region involved in emotional regulation. That offers a…

Discover more
Some escape-room locks are designed to release when power fails
Games

Some escape-room locks are designed to release when power fails

An electromagnetic lock needs electricity to keep holding a door shut. Cutting power releases that hold, so the puzzle’s locked-door illusion can give way to…

Discover more
The Blair Witch filmmakers returned a camera for a refund
Culture & entertainment

The Blair Witch filmmakers returned a camera for a refund

A 1999 TIME report says the directors bought a $500 Hi8 camera at Circuit City, used it for the shoot, and returned it afterward. The actors' rough handheld…

Discover more
Maimonides ranked the Hashmalim as elite electric angels hovering just below the divine throne
Myths & mysteries

Maimonides ranked the Hashmalim as elite electric angels hovering just below the divine throne

Maimonides placed them fourth in his angelic hierarchy; their name is associated with Ezekiel’s vision of a fiery chariot.

Discover more
When losing means choosing who wins
Games

When losing means choosing who wins

In games such as Twilight Imperium, a player who can no longer win may still have enough resources to decide who does. They can use trade deals or attacks to…

Discover more
DNA can fold itself into microscopic machines
Science

DNA can fold itself into microscopic machines

DNA’s matching letters give engineers a way to make it fold on cue: A pairs with T, while C pairs with G. Arrange the strands carefully and they can assemble…

Discover more
How ocean microbes help make clouds
Science

How ocean microbes help make clouds

Cloud droplets need a place to get started, and tiny airborne particles can provide one. Some ocean microbes release gases that react in the air to make those…

Discover more
Why feeling your heartbeat may fuel panic
Psychology

Why feeling your heartbeat may fuel panic

A pounding heart can become panic when you start listening to it for clues. You notice the thump, read it as danger, and your body speeds up further—now the…

Discover more
Puerto Rico pledged sales-tax money to a separate pile of debt
Economy

Puerto Rico pledged sales-tax money to a separate pile of debt

COFINA issued bonds backed by an allocated share of sales-and-use-tax revenue. Its 2019 restructuring cut roughly $17.6 billion of bond debt to $12 billion…

Discover more
A surgeon's headset can put a scan over the patient
Technology

A surgeon's headset can put a scan over the patient

Mixed-reality systems turn scan data into a three-dimensional model that appears in the surgeon's view. The hard part is registration: lining up the virtual…

Discover more
Why childbirth can trigger a chemical crash in the brain
Health

Why childbirth can trigger a chemical crash in the brain

During pregnancy, the brain gets used to high levels of allopregnanolone, a steroid that has a calming effect on nerve activity. After birth, those levels…

Discover more
Why plotting revenge feels so rewarding
Psychology

Why plotting revenge feels so rewarding

Replaying the perfect comeback can feel good before you do anything. The fantasy puts you back in control and promises a satisfying correction to the wrong;…

Discover more
The cliffside city built to hide a kingdom
Travel

The cliffside city built to hide a kingdom

Carved into Georgia’s Erusheti Mountain under Queen Tamar in the 12th century, Vardzia held more than 6,000 rooms, a church and a throne room, all linked by…

Discover more
Why Ta Prohm comes alive in the rain
Travel

Why Ta Prohm comes alive in the rain

Rain brings Ta Prohm’s strangler fig roots and stone walls to life: moss and foliage turn vivid, while the downpour washes dust from sandstone carvings and…

Discover more
The Office made a glance at the camera do the work of a joke
Culture & entertainment

The Office made a glance at the camera do the work of a joke

The cast used deadpan looks into the lens to draw viewers into a silent, conspiratorial joke, often making an awkward pause funnier than a spoken line.

Discover more
Why medieval monks drew rabbits fighting knights
History

Why medieval monks drew rabbits fighting knights

With blank margins to fill, monks turned the page into a topsy-turvy world: rabbits hunted hounds, skinned hunters, and jousted with knights. The joke was the…

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