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
The eraser that swallows graphite whole
A kneaded eraser doesn’t scrape graphite away; it lifts the pigment by sticking to it. Fold the putty, and the graphite gets trapped inside until the eraser…
Discover more
No one owns the classic paperclip design
The familiar Gem clip never received an official patent, so no company can claim exclusive rights to its design. It belongs to everyone by default—not because…
Discover more
Jam rules can treat a carrot as fruit
European jam legislation includes carrots within its special definition of fruit. That lets carrot-based preserves fit the product rules without changing the…
Discover more
Why Vancouver isn’t on Vancouver Island
Vancouver is a mainland city; Vancouver Island is a separate place that shares its name.
Discover more
Telepathy projects thoughts directly between minds
Early researchers tested telepathy claims with card-guessing experiments, asking whether one person could identify symbols another was viewing.
Discover more
The river that flows north
This ancient waterway cuts north through the Appalachian Mountains.
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.
Early vacuum cleaners needed two people
Early vacuum cleaners were so cumbersome that cleaning took a team: one person cranked the machine while another guided the nozzle around the room. The chore…
Discover more
Lake Tanganyika stretches further than any freshwater lake
At 418 miles long, this rift lake also has internal tides, much like an ocean.
Discover more
Jingle Bells reached space as a Christmas prank
In December 1965, Gemini 6 astronauts Wally Schirra and Tom Stafford reported a mysterious object and then played Jingle Bells on a tiny harmonica and bells.…
Discover more
How an old speedometer moved its needle
A spinning cable turned a magnet inside the speedometer. The faster it spun, the more the magnet pulled an aluminum cup against a spring, moving the needle.
Discover more
Safety valves release steam to prevent pipe ruptures
When pressure rises too high, the valve opens to vent steam and relieve pressure before pipes rupture.
Discover more
Mantises feature highly specialized stereoscopic vision
A mantis gets a distance clue by comparing the slightly different views from its two large eyes. That helps it judge how far away prey is before launching a…
Discover more
Spending eight hours applying full-body silicone
Some fantasy-creature performers spend eight hours in makeup, sitting still from 2 a.m. as artists glue rubber pieces over their bodies.
Discover more
Why every movie gets its own company
Studios often create a separate LLC for a film to contain its debts and legal risks, keeping them from affecting the parent company.
Discover more
Why filmmakers shipped black sand to white beaches
To match historical reference photos, some war epics have brought hundreds of tons of crushed black volcanic rock to white beaches.
Discover more
Albatrosses harvest energy from changing wind
They climb into faster air above the waves and sweep back toward the slower air near the surface. Repeating this cycle, called dynamic soaring, lets them…
Discover more
Why a yo-yo can sleep at the end of its string
The string loops loosely around the axle rather than being tied to it. When thrown hard, the axle spins inside the loop; a tug catches the string and sends…
Discover more
Mail-order pharmacies use temperature-controlled shipping
A temperature-sensitive prescription can be exposed to changing outdoor temperatures on its way to your door. Insulation slows heat moving through the box,…
Discover more
One of the earliest drum machines made rhythm with light
Leon Theremin's Rhythmicon, built around 1931, used light sources and rotating perforated wheels to generate repeated patterns. Pressing keys selected rhythms…
Discover more
A lyrebird's love song can borrow other animals' voices
Male lyrebirds build elaborate displays around learned sounds, especially imitations of other birds. Some individuals also reproduce human-made noises…
Discover more
Microencapsulation protects sensitive drug compounds
A polymer shell wraps around a sensitive drug and blocks conditions that could damage it. When the capsule reaches the environment it was designed for, the…
Discover more
New York can tax the same food differently depending on how it is sold
Many groceries are exempt, while hot food, sandwiches, and meals sold for eating on the premises are generally taxable. The tax follows the sale's…
Discover more
Why camel caravans travel nose to tail
A lead camel sets the pace, and the rest follow along the established track in single file. That keeps a long caravan together across narrow routes where…
Discover more
Being entirely incapable of living independently alone
Even adults who live alone rely on other people’s work: food systems, power, medicine, and the skills learned from generations before them. Human life begins…
Discover more