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A little more wonder

Catherine of Siena claimed to marry Jesus invisibly
She said the mystical wedding came with a ring visible only to her.
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Replacing frustrated workers drains resources
When an employee leaves, the company has to spend time and money recruiting and training a replacement. Keeping workers can cost less than repeatedly starting…
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Birefringent crystals transport light at two unique speeds
Inside a birefringent crystal, light meets different speeds depending on its polarization—its direction of vibration. The crystal splits one beam into two,…
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What's hidden inside an instant photo's white border
The white border conceals pods of developer fluid; rollers crush them and spread the liquid across the image as it emerges.
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Multicast routing transports one video stream to thousands
Instead of sending a separate video to every viewer, multicast sends one stream through the network, then copies it only where routes branch. Thousands of…
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Streaming password crackdowns aggressively squeeze loyal users
After years of encouraging family account sharing, streaming platforms began using IP tracking to restrict it, sometimes requiring relatives to pay for…
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Keep discovering with Stacky. Interesting facts in an app that is always within reach.

How Earth sheds heat into space
Earth's warm surface sends infrared energy upward; some escapes through the atmosphere into space. The planet mails its heat as light, because space has no…
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Why electricity arrives before electrons
Electrons drift along a wire like a crowd shuffling through a doorway, but the electrical signal travels through the circuit close to the speed of light.…
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Hostile environments naturally breed poor results
When employees are busy avoiding trouble, they have less room to suggest a better idea. Fear and intimidation can turn a team’s attention from solving…
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LaserDisc read movies with a laser—but the picture was analog
The disc stored the video signal as a continuously varying recording read optically, unlike a DVD’s digitally encoded picture. Some editions paired that…
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Your duffel bag is named after a Belgian town
The word comes from Duffel, a town in Belgium where thick wool cloth was made in the 17th century. Soldiers later used the durable fabric for bags.
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When jousting meant knocking rivals off rowboats
In southern France, competitors stood on platforms fixed to rowboats and tried to knock each other into the river with long poles. The boats made balance part…
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Stigmatic wounds remain open permanently
Believers say the wounds can bleed for years without becoming infected, a claim that runs counter to ordinary expectations about healing.
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Rotoscoping requires tracing live footage frame by frame
Artists filmed actors, projected the footage onto frosted glass, and traced their outlines frame by frame, producing the unusually fluid movement seen in…
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Why Disney parks put trash cans 30 steps apart
Walt Disney reportedly settled on 30 steps after observing how far guests would carry trash before dropping it.
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Why a boss's weapon gets weaker when you pick it up
The game sharply reduces the sword's damage once it becomes loot: the weapon that killed you in one hit suddenly does far less in your hands.
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Theater applause used to be a paid job
A claque was a group hired to applaud performers. Its members supplied the reaction a production wanted the rest of the audience to join. Before online likes…
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Why diners once tilted bowls away from themselves
Etiquette guides treated pulling a bowl toward yourself as uncivilized, so diners were told to tilt it away—even if that made spilling more likely. Good…
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What repetitive clicking can do to your hand
Each click is a small motion, but thousands of repetitions can irritate tendons and other tissues in the hand. When those tissues get sore, an ordinary…
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Maria of Oignies cut off chunks of her flesh
She turned private religious grief into a bodily act of penance, reflecting the extreme forms medieval mysticism could take.
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People who swear more may lie less
People often tidy their language to manage how they come across. Someone who swears freely may be doing less of that verbal grooming, which can correlate with…
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Crystals transport thermal energy via quantized sound waves
In a crystal, neighboring atoms vibrate and pass energy through the solid. Those vibrations come in quantized packets called phonons, so heat travels more…
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Spamming the interact key collects nearby loot instantly
A single button can collect nearby items straight into your inventory, skipping the slow process of picking them up one by one.
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Network routing transports users to the nearest server clone
Web services keep copies of content on servers in different locations. Network routing sends a request toward a nearby copy, cutting the distance data…
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