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 6 / 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
Broadcasters must keep viewer complaints in public files
Culture & entertainment

Broadcasters must keep viewer complaints in public files

Stations must keep viewer complaints in a physical or digital public inspection file, where members of the public can review them.

Discover more
Capacitors release stored energy in a quick burst
Science

Capacitors release stored energy in a quick burst

A capacitor separates opposite charges onto two plates, storing energy like a spring held under tension. Connect it to a circuit and the charges can rush…

Discover more
Australia is wider from coast to coast than the Moon’s equatorial diameter
Myths & mysteries

Australia is wider from coast to coast than the Moon’s equatorial diameter

The outback’s coast-to-coast span is greater than the Moon’s equatorial diameter.

Discover more
Background actors get extra pay to bring their own props
Economy

Background actors get extra pay to bring their own props

Productions sometimes give background actors a small bump in pay to bring personal items—such as a tennis racket, skateboard, or hat—instead of supplying…

Discover more
A $500 shirt makes a $200 shirt feel cheap
Psychology

A $500 shirt makes a $200 shirt feel cheap

A luxury price can reset your idea of what a shirt costs. After seeing $500, your mind treats $200 as a comparison rather than an absolute amount, so the…

Discover more
Wealthy buyers got customized underworld scrolls
Myths & mysteries

Wealthy buyers got customized underworld scrolls

These scrolls were customized for wealthy buyers, with spells, passwords, and instructions for navigating the underworld.

Discover more
A tractor hitch lifts equipment over stumps
Transport

A tractor hitch lifts equipment over stumps

Hydraulic arms raise the hitch’s two lower links, while a top link keeps the implement angled and controlled. Lift the whole attachment and its blades or…

Discover more
Human-powered rickshaws fit Japan’s narrow streets
Transport

Human-powered rickshaws fit Japan’s narrow streets

A two-wheeled rickshaw slipped through narrow streets where larger vehicles struggled, and its simple human-powered design kept costs low. Japan’s crowded…

Discover more
People blame calendar changes for their lost keys
Myths & mysteries

People blame calendar changes for their lost keys

People blame the calendar change for misplaced keys and wallets, sidestepping responsibility for losing track of them.

Discover more
Clear skies at your airport do not mean a clear flight path
Travel

Clear skies at your airport do not mean a clear flight path

A storm can close airspace along the route or delay the aircraft assigned to your flight earlier in its day. Airport weather is only one part of the network.…

Discover more
Astrology’s sextile links planets 60 degrees apart
Myths & mysteries

Astrology’s sextile links planets 60 degrees apart

Astrologers see it as a modest opening for talent or opportunity, not an effortless advantage; you still have to act on it.

Discover more
Monitor stands push keyboards toward desk edges
Technology

Monitor stands push keyboards toward desk edges

The base's wide, forward-reaching legs can take up enough desk depth to push your keyboard toward the edge.

Discover more
Darwin blasted a bassoon at worms to test their hearing
History

Darwin blasted a bassoon at worms to test their hearing

Darwin played a bassoon loudly at earthworms on a wooden table to test whether they could hear. They gave him no sign that they could, so he concluded they…

Discover more
IKEA became a publisher on a 200-million-copy scale
Economy

IKEA became a publisher on a 200-million-copy scale

At its peak, the furniture catalog reached more than 200 million copies a year. Room photographs did more than list products: they showed readers an entire…

Discover more
Why comets grow tails near the Sun
Science

Why comets grow tails near the Sun

Sunlight heats a comet and loosens gas and dust from its surface. Light and the solar wind—the flow of particles from the Sun—push that material away from the…

Discover more
WonderSwan added buttons for rotated play
Games

WonderSwan added buttons for rotated play

Its controls included an extra cluster of buttons for use when the console was rotated. The game software determined whether you played with the screen…

Discover more
A distant deadline gives a small task room to expand
Economy

A distant deadline gives a small task room to expand

Give a task a week and it can expand to fill the week, even if it takes only two hours of actual work. Parkinson’s Law describes how the deadline can shape…

Discover more
Smudged microfilm obscures archived birth times
Myths & mysteries

Smudged microfilm obscures archived birth times

Records from a closed hospital may be buried in old files, and the search can end with a smudged microfilm image instead of a readable birth time.

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