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 painful surprise hidden in a cootie catcher
The fortune teller’s sharp folded edges can nick the skin between your fingers as you work it.
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The click that teaches CPR
As the trainee pushes down, a hidden clicker sounds once the compression is deep enough. That little noise makes an invisible measurement audible: the learner…
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A conker is a seed used as a tiny demolition tool
Players hang horse-chestnut seeds on strings and strike one against the other, trying to break the opponent's conker. Repeated impacts eventually split the…
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Intense staring contests dry out eyeballs rapidly
Without blinking, the tear film that keeps the eye's surface moist evaporates, causing stinging and eventually forcing a blink.
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Holding your breath drops oxygen levels to induce euphoria
Prolonged breath-holding can lower oxygen and produce euphoria, but that feeling comes with the body's survival response to oxygen deprivation.
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Why wearing a monocle could seem insulting
A monocle could turn a glance into a performance: fixing someone with a cold, scrutinizing stare made it look as if you were judging them from above. The…
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Why throw pillows can cost more than couches
A discounted couch gets shoppers through the door; the pillows are where the store makes back the margin. The small add-ons can cost more than the big thing…
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Sitting in lotus posture mechanically locks your leg joints
The posture’s deep external rotation brings the knees and hips into a rigid triangle, which is said to help keep the body upright. The explanation is…
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The Hula Hoop craze sold millions of copies of an ancient idea
People had played with hoops for centuries before Wham-O turned the activity into a plastic toy sensation in 1958. The new material made a light, repeatable…
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Ghosts onstage once wore squeaky white leather
The stiff leather gave a ghost an eerie shape, but every move came with a creak. The costume looked spectral; its sound effects were less convincing.
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Early thermometers took 20 minutes to read
Early glass thermometers needed time for their liquid column to settle at the patient’s temperature. Because the glass was fragile, the patient also had to…
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Being magically whisked away by ruby slippers
The slippers are less a pair of shoes than a return ticket: Dorothy clicks her heels and says she wants to go home. The magic handles the distance; the…
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Why e-readers barely use power while you read
The page stays visible because microscopic black and white particles remain in place after an electric charge moves them. Turning the page takes power to…
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Why tragedy means “goat song”
The word’s roots mean “goat song,” though the connection to tragedy is obscure.
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Ayahuasca vines require an exact chemical partner
One plant supplies the hallucinogen; a second vine blocks the digestive enzymes that would otherwise break it down, making the combination work.
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Carbon fiber is composed of interwoven microscopic threads
Carbon fibers are especially good at resisting a pull along their length, but loose strands need help working together. Resin binds the fibers and passes…
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Paintball welts leave lasting colorful hematomas
The paint washes off, but a paintball’s impact can leave a round purple bruise that lasts for weeks.
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Victorians swung heavy clubs for exercise
The clubs weren’t just oversized dumbbells: swinging one makes the body brace and turn against its weight. Adapted from wrestling conditioning, they became a…
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Chewing raw myrrh casually numbs severe physical pain
Myrrh resin was chewed or applied to wounds for pain relief, which may help explain why classical tales prized it beyond its fragrance.
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Fear Factor stunts caused gastrointestinal distress
The unfamiliar foods and contestants' revulsion made nausea a behind-the-scenes problem during filming.
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Poker was once played with just 20 cards
Early 19th-century riverboat poker variants used only 20 cards—the highest cards in the deck—dealt five apiece to four players.
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Children once played games with real knives
Some children’s games involved tossing open pocketknives into the dirt near their feet—a risky pastime that could leave shoes bloodied.
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Magic Kingdom gives its trash an underground express route
Waste dropped into collection points travels through pneumatic tubes to a central facility. Moving air does the carrying, keeping much of the process out of…
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You could fly through the asteroid belt and see nothing
The asteroid belt sounds like a field of rocks, but its asteroids are separated by enormous stretches of space. A spacecraft can cross the region without…
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