History
Discover facts about history. Small discoveries that change the way you see familiar things.
History
Why Aztec carvings leave almost no space blank
Blank space on a sculpture is simply wasted real estate. Artisans abhorred plain surfaces so deeply that they covered absolutely every square inch of their…
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The therapy that spun psychiatric patients unconscious
Because if someone is mentally unwell, dizzying them into unconsciousness will surely fix it. 'Rotational therapy' spun patients at horrific speeds to…
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Babylonian astronomers used geometry to track Jupiter
Centuries before European mathematicians claimed to have invented calculus concepts, clay-tablet-wielding scholars were already using complex geometric area…
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Why ancient Greeks feared redheads would become vampires
Being a ginger has historically always been rough, but the Greeks took the prejudice to supernatural extremes. They genuinely thought the lack of melanin and…
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The Spanish Inquisition kept a dictionary of swear words
Because you can't properly punish someone for cursing if you don't keep notes. The inquisitors meticulously logged specific regional swear words and…
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Every terracotta warrior has a unique face
Mass production usually implies identical copies, but artisans literally hand-sculpted distinct facial features for thousands of life-sized clay figures. The…
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Early compasses used a magnetized rock floating in a bowl of water
Navigational precision used to literally involve dropping a rock in a bowl of water. Before sleek brass dials, maritime navigation relied on a chunk of…
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Whaling ships spent years at sea
Chasing giant marine mammals was not a quick weekend excursion. Ships regularly departed port and did not return for up to four consecutive years. Crews lived…
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The first mechanical clocks had just one hand
Precision is entirely subjective when your clock only has one hand. Early mechanical timepieces were designed without any mechanism to track minutes, simply…
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The Soviet Union once kept clocks on permanent summer time
In a supreme act of chronological rebellion, the Soviet government decided that shifting clocks twice a year was entirely too much effort. In 1930, they…
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George Washington's dentures included teeth from enslaved people
The cherry tree story is cute, but they conveniently left out the part where the founding father's smile was a horrifying mosaic of brutal exploitation.…
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When starvation became a spectator sport
Long before intermittent fasting became a tech bro personality trait, the Victorians made starving a spectator sport. 'Hunger artists' would lock themselves…
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Why the multiplication sign is an X
There is no profound reasoning behind the 'X' we use for math. An early researcher literally just took the standard cross symbol used for addition and rotated…
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The tangram puzzle is made from exactly seven shapes cut from one square
Who needs video games when you can obsessively rearrange polygons until your brain hurts? The tangram consists of exactly seven flat geometric shapes cut from…
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Ancient Chinese military mass produced crossbow triggers
Standardized, interchangeable parts are usually viewed as an incredibly modern industrial concept. Yet, ancient Eastern armories were casting complex bronze…
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Route 66 helped invent the modern American road trip across the Southwest
Route 66 wasn't just a road; it was an aggressively promoted cultural artery that dragged millions of motorists across the harsh American Southwest. It…
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The dog fur that inspired Velcro
After pulling stubborn plant burrs off his dog's fur, an observant engineer put them under a microscope to study their tiny hooks. He spent years copying…
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William Harvey waited twelve years to publish his discovery of blood circulation
William Harvey figured out that blood actually pumps continuously through the human heart, but he was utterly terrified of the academic blowback. Knowing that…
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Voltaire reportedly drank an estimated 70 cups of coffee and chocolate daily
If you've ever wondered how Enlightenment philosophers got so much writing done, the secret is a lethal dose of caffeine. Voltaire practically lived at Paris…
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The Pope once divided half the world between Spain and Portugal
Armed with absolutely zero cartographic knowledge, the Pope just casually drew a completely arbitrary line down the middle of a map of the globe, legally…
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The War of the Roses was a decades-long fight over England's throne
Generations of intense bloodshed and countless dead peasants all happened just because two absurdly wealthy branches of the same English royal family couldn't…
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The Sahara was once green and filled with lakes
Before it became an endless ocean of blistering sand, the Sahara was basically a massive tropical resort. Geological shifts slowly dried up a lush,…
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When a census became a tool for squeezing taxpayers
Counting citizens sounds like a harmless statistical hobby, but 18th-century Sweden realized it was the ultimate tool for resource extraction. By…
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Japan’s traditional sound was shaped by the koto, a long instrument with strings
Because a hollowed-out piece of wood is all you really need to shape a culture. Originally restricted to elite circles, this long stringed instrument slowly…
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