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
Perineum separates the digestive and reproductive exits
The perineum is the strip of tissue between the anus and the external genitals.
Discover more
Dopamine makes you chase what you want
The chase can outlast the pleasure. Dopamine helps stamp a cue as something worth pursuing, so a glimpse of what you want can pull your attention and effort…
Discover more
An ounce of gold can become 50 miles of wire
Gold can stretch into wire without snapping, a property called ductility. Makers pull it through a sequence of holes, each a little smaller than the last,…
Discover more
Red Light, Green Light turns one person's gaze into a stop signal
Players advance while the caller looks away, then freeze when the caller turns around. Variants change the words or setting while preserving the same tension:…
Discover more
An alkaline battery's bounce changes as its chemistry changes
As the battery discharges, zinc turns into zinc oxide, changing the material inside. Researchers measured how that structural change affects rebound after a…
Discover more
Why tinnitus sounds like a noise from nowhere
Tinnitus can happen when the auditory system gets less input, often after noise-related hearing damage. One possible explanation is that the system becomes…
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.
Complex physical tasks run on mental autopilot
Once a physical skill is practiced enough, you don’t have to consciously plan every movement. The sequence becomes procedural memory: your body can carry out…
Discover more
Why cramming fails when learning
Cramming packs exposure together but gives your memory little practice finding an idea on its own. Close the book and the apparent mastery can evaporate;…
Discover more
Some Venetian platform shoes needed human assistance
Chopines could raise their wearers so high that attendants helped them walk. Surviving examples use costly, delicate materials, showing they were about status…
Discover more
Why retirees trade savings for a monthly check
A retiree gives an insurer a lump sum and gets predictable monthly payments in return. The insurer invests the money; the tradeoff is giving up access to the…
Discover more
Your toll pass may be tracking your commute
When a toll reader detects your pass, it records the trip for billing. A string of those records traces where you travel and when, turning a device designed…
Discover more
Hierophant Tarot card holds a cross with three bars
The three-barred cross on the Hierophant's staff represents authority over tradition and established rules. The card is associated with conformity rather than…
Discover more
The wartime messages carried by pigeons
A pigeon knows how to return to its home loft, so soldiers carried birds to the front with tiny message capsules attached to their legs. When radios failed or…
Discover more
The tree that survives having its bark stripped
A cork oak can regrow the outer bark that has been harvested, so the tree can stay alive and grow. After about a decade, enough new bark is ready for another…
Discover more
A pension promise reaches beyond today's paycheck
A funded pension relies on contributions and investment returns to meet future benefits. If the money falls short, later contributions, taxpayers, employers,…
Discover more
Real Parmigiano-Reggiano comes from only a few provinces
A cheese maker can’t use the name just because the recipe seems right. Parmigiano-Reggiano is legally reserved for cheese made in a designated group of…
Discover more
The Las Vegas Strip isn't in Las Vegas
Most of the Strip lies in Paradise, an unincorporated community outside Las Vegas city limits, where casinos avoid city taxes.
Discover more
Earth placements ground themselves in sheer absolute denial
In the astrological stereotype, earth placements respond to chaos by digging in their heels and denying anything is wrong.
Discover more
Soldiers inspired McDonald's first drive-through
At Fort Huachuca in Arizona, soldiers were not supposed to leave their vehicles off base while wearing fatigues. A McDonald's in nearby Sierra Vista added a…
Discover more
Life insurance is a bet on when you die
An insurer takes premiums now in exchange for paying a death benefit later. If the covered person dies early, the payout comes sooner; if they live longer,…
Discover more
Why Linux has a penguin mascot
Linus Torvalds chose a penguin after one nipped him at an Australian zoo; he wanted Tux to look chubby and content.
Discover more
Radium's glow comes with a deadly cost
The light came from two players: radium sent out radiation, and a nearby phosphor absorbed that energy and glowed. So the painted numbers weren’t lit by…
Discover more
Perpetual motion directly violates thermodynamic laws
A perpetual-motion machine would keep delivering energy without taking any in, effectively making energy from nothing. That breaks thermodynamics; real…
Discover more
Baker-Miller pink historically calmed aggressive inmates
Baker-Miller pink was claimed to temporarily lower heart rates and reduce physical strength. Prolonged exposure, however, was said to cause extreme…
Discover more