The world is more interesting than you think.
Unexpected facts, big ideas, and little discoveries. Find something that sparks your curiosity today.
A little more wonder
Why pistachios need scorching summers and freezing winters
Pistachio trees need winter chill to help coordinate bud growth and flowering, then a long, hot summer for the nuts to mature. The shells split as the nuts…
Discover more
Why cinemas love red seats
In dim light, the eye becomes less sensitive to red, so red seats appear much darker and less distracting when the lights go down.
Discover more
Why your eyes cross when you focus up close
Bring a phone close to your face and both eyes turn inward to keep it in focus. The closer the target, the more they have to converge; that inward angle can…
Discover more
Movie bottles are engineered to break on cue
Breakaway props can use specially formulated brittle resins instead of ordinary glass. Their job is to fracture with less force while looking convincing on…
Discover more
Your garbage disposal has no spinning blades
Instead of blades, spinning blunt lugs fling food against a stationary grinding ring, breaking it into small particles that wash down the drain.
Discover more
Laser eye surgery vaporizes part of your cornea
In LASIK, a thin flap is created in the cornea, then an excimer laser vaporizes microscopic layers of tissue to reshape it. The procedure can produce a…
Discover more
STACKY FOR IPHONEA bigger world.
One discovery
at a time.
Keep discovering with Stacky. Interesting facts in an app that is always within reach.
1950s 3-D offered something television couldn't easily deliver
Studios used stereoscopic films to help distinguish a cinema visit from watching a small home screen. Glasses sent different images to the two eyes, adding a…
Discover more
First roundabout was constructed for a residential loop
It was built as an architectural centerpiece for a crescent of townhouses, not to relieve highway congestion.
Discover more
Syllable stress alters the entire definition of words
Say “PREsent” and you may mean a gift; say “preSENT” and you may mean to show something. The sounds are nearly the same, but stress tells the listener which…
Discover more
Radionics uses a drop of blood to diagnose you remotely
Radionics practitioners claimed a machine's dials could diagnose and treat someone hundreds of miles away using a drop of their blood—even though the device…
Discover more
Why fictional phone numbers start with 555
Viewers sometimes called numbers they heard on screen, tying up local telephone exchanges. The 555 prefix was set aside for fictional numbers.
Discover more
Dick Cavett found that too much research could spoil an interview
His staff prepared information about guests, but Cavett reduced how much material he wanted after finding himself referring to notes too often. A thoroughly…
Discover more
Copying dollar bills for a camera has real-world rules
U.S. rules for color illustrations require a one-sided image outside specified life-size dimensions, along with disposal of reproduction materials after use.…
Discover more
Genshin Impact players treat their tiny fairy guide as food
Though she’s your guide, some dialogue choices let the protagonist joke about treating the tiny companion as emergency rations.
Discover more
Dead Space hid its ending in chapter initials
The chapter initials spell out the game's final twist—and the initials were visible together on the save screen.
Discover more
Moths drink tears from sleeping animals
Some moths sip tears from resting animals with a straw-like mouthpart called a proboscis. They’re after sodium, a mineral that nectar may not supply easily. A…
Discover more
Medical autoclaves use pressurized steam to kill bacteria
An autoclave traps steam under pressure, raising its temperature above water’s normal boiling point. The hot vapor penetrates tiny crevices in surgical tools…
Discover more
Some giant wind-turbine blades contain lightweight balsa
Sandwiched between stronger outer layers, a light core adds thickness without much weight. That separation helps a blade resist bending, much as a deep beam…
Discover more
Your brain rotates objects like sluggish CAD software
To picture an object turned at an angle, your mind often has to mentally rotate it until it matches the view you know. The bigger the turn, the longer that…
Discover more
Outer Wilds lets you keep knowledge when time resets
A time loop wipes away much of what you physically did, but not what you have learned about the solar system. A clue from one attempt can turn an apparently…
Discover more
Denim jeans were heavily marketed as rugged workwear
Rivets and thick denim were designed to keep miners' pants from tearing during hard labor; high society initially ignored the rugged workwear.
Discover more
Some movie boulders can bounce
Some heavy-looking movie boulders are made of polyurethane foam under a hard coating, so they can bounce if dropped.
Discover more
Cloud's famous sword had a life before Cloud
The Buster Sword also belongs to Zack in the Final Fantasy VII story, so the oversized weapon connects characters as well as battles. Its familiar outline…
Discover more
Mushers use specific verbal commands to steer dogs
Mushers steer with voice cues: “gee” tells the team to turn right, and “haw” sends it left. The lead dogs hear the command first, so a few syllables steer a…
Discover more