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

Japan's bullet trains get a full clean before every trip
While your local commuter train has featured the same sticky puddle since Tuesday, specialized crews in Japan swarm the bullet train cars, wiping trays,…
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The Sumerians invented compound interest before the wheel
Humanity's priorities have always been tragically corporate. Long before anyone figured out how to easily roll a cart from point A to point B, the Sumerians…
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Why boredom makes you seek something new
That agonizing feeling of having nothing to do is just your evolutionary programming screaming at you to go secure resources. Without boredom, early humans…
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Managed state lotteries to fund his travels
Giacomo Casanova is universally known as a historic romantic menace, but he actually spent a massive amount of his free time translating esoteric texts and…
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Miniature wargaming enforces strict true line of sight rules
Arguing over whether a tiny plastic sniper can shoot a plastic goblin gets incredibly petty. Many miniature games utilize a 'true line of sight' rule, forcing…
Discover moreBritney Spears' Toxic borrowed its hook from Bollywood
You'd think that iconic, high-pitched string hook was the pinnacle of western pop magic. It's actually a direct lift from an old Bollywood love song, sped up…
Discover moreA bigger world.
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at a time.
Keep discovering with Stacky. Interesting facts in an app that is always within reach.

Why billiards tables are covered in green felt
Because the game evolved from a lawn sport similar to croquet, players refused to let the grass aesthetic go. The iconic green felt remains an enduring…
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Why squaring a circle is impossible
Ancient philosophers wasted centuries trying to construct a square with the exact same area as a given circle using only a compass and straightedge. It is…
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Modern magical rune casting was actually invented in the nineteen eighties by a guy named Ralph
Vikings definitely carved runes into stones for writing, but they weren't using them like a Magic 8-Ball. The modern practice of pulling a rune from a velvet…
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Zelda Breath of the Wild stasis heavily multiplies force
By freezing objects in time and rapidly striking them, players store massive amounts of kinetic energy. When time resumes, the physical object is violently…
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Sold overpriced esoteric skincare to wealthy nobles
Count Alessandro Cagliostro ran highly exclusive lodges across Europe, promising absolute physical perfection. Behind closed doors, his grand operation mostly…
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Katamari rolling uses sticky physics to hoard junk
The core mechanic is essentially just a constantly expanding sphere that calculates the volume of every object it touches. If the object is smaller, it…
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Frequency division creates distinct transmission lanes
Airwaves are just incredibly strict highways with invisible lanes. Frequency Division Multiplexing allows massive amounts of data to travel simultaneously…
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Magnetic fields loop continuously without ever ending
Unlike gravitational lines that just pull straight in, magnetic fields are eternal loops. A field line exiting the north pole must perfectly curve around and…
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Why a friend's success can feel complicated
Your best friends are happy for your promotion right up until it makes them feel entirely inadequate. Major leaps forward in status instantly trigger deep,…
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Why AM radio travels farther after dark
Due to entirely bizarre atmospheric physics, the Earth's ionosphere changes significantly when the sun goes down, causing older amplitude modulation waves to…
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Snatching speeding arrows out of the air
Fast reflexes are the only thing preventing a severe impalement. Some incredibly reckless illusionists perform live stunts where they attempt to snatch a…
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John Carmack built Mario 3 for Nintendo—and got rejected
Nintendo looking at a flawless, buttery-smooth PC port of their flagship game and saying 'nah' is a truly legendary bag fumble. Before making Doom, coding…
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London's first Underground trains had no windows
Because sitting in a dark, claustrophobic box rocketing through a soot-filled subterranean tunnel sounds like a perfectly relaxing way to start your day. When…
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Peak app traffic causes massive digital lag
During heavily hyped celestial events, the surge of users logging into apps simultaneously crashes the servers. They blame the bad energy of the universe, but…
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BioShock's big ideas took a back seat to lightning and bees
A deeply intellectual critique of Ayn Rand’s Objectivism wrapped in the comforting shell of a first-person shooter. Creator Ken Levine built an elaborate…
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When whale teeth were currency in Fiji
Nothing projects absolute authority and purchasing power quite like handing over the massive, terrifying tooth of a sperm whale. Known as 'tabua', these…
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Why some display cables have unused wires
You paid for a premium cord, but you are not even using half the wires inside it. Most modern high-definition display cables have dedicated pins strictly for…
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Cardinal air starts debates to play devil's advocate
Nothing brings them more joy than adopting an opposing viewpoint they do not actually believe in. They initiate intellectual warfare solely for the thrill of…
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