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The US speed limit reaches 85 mph in Texas
Transport

The US speed limit reaches 85 mph in Texas

Texas’s 85-mph limit applies to a stretch of State Highway 130, a toll road built with long, open sections and gentle curves. Its design leaves room for…

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Rasputin took freezing ice baths to cure his epic hangovers
Myths & mysteries

Rasputin took freezing ice baths to cure his epic hangovers

Rasputin allegedly plunged into freezing Siberian rivers after heavy drinking, hoping the shock would help him recover. The story presents it as a desperate…

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When towns sprayed oil on dirt roads
Transport

When towns sprayed oil on dirt roads

Oil bound the fine particles on dirt roads, so traffic raised less dust as it passed. It worked by making the ground stick together—less airborne grit, more…

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Why Superman keeps appearing in Seinfeld
Culture & entertainment

Why Superman keeps appearing in Seinfeld

Seinfeld was a Superman fan, so the hero appears throughout the show—in an apartment statue or magnet, or in conversation.

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Why teachers may favor students labeled “smart”
Psychology

Why teachers may favor students labeled “smart”

A “smart” label can change what a teacher notices. A student’s correct answer may get more attention, while a mistake is treated as a fluke; the teacher may…

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Aztec warriors fitted wooden weapons with volcanic-glass blades
History

Aztec warriors fitted wooden weapons with volcanic-glass blades

Aztec warriors set razor-sharp obsidian blades into wooden clubs. The volcanic glass could take an exceptionally fine edge, though it was brittle—a formidable…

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A hotel key is an expiring permission, not just a room number
Travel

A hotel key is an expiring permission, not just a room number

Electronic cards can encode or link to an access period as well as the door they open. That period is programmed by the hotel, so the lock's timing and the…

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Columbus thought Earth was shaped like a pear
History

Columbus thought Earth was shaped like a pear

In his account of the 1498 voyage, Columbus imagined the world rising toward a high point where the earthly paradise lay. The pear-like shape helped him…

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OMG first appeared in a 1917 letter
History

OMG first appeared in a 1917 letter

Admiral John Fisher used 'O.M.G.' in a 1917 letter to Winston Churchill, spelling it out as 'Oh! My God!' in a joke about a new order of knighthood. The…

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George Washington really grew hemp
History

George Washington really grew hemp

Hemp fiber supplied rope and canvas, not just an unusual entry in a president’s farming diary. Washington even recorded the tedious work of separating male…

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Medieval sea wizards sold tied knots to control ocean winds
Myths & mysteries

Medieval sea wizards sold tied knots to control ocean winds

In Northern Europe, cunning folk sold sailors ropes with three knots: loosening them supposedly released a gentle breeze, a strong wind, then a hurricane.

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Why Hawaii has Interstate highways
Transport

Why Hawaii has Interstate highways

The federal government funds the Interstate Highway System for national defense, not because every highway connects states. That’s why Hawaii has highways…

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A small drop of water can contain about five sextillion atoms
Science

A small drop of water can contain about five sextillion atoms

Take a drop of roughly 0.05 milliliters: it contains about 1.7 sextillion water molecules. Each molecule has three atoms, giving about five sextillion atoms…

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Why gas pump hoses are designed to break away
Transport

Why gas pump hoses are designed to break away

A breakaway coupling snaps apart if a driver pulls away with the nozzle still in the car. Valves seal both sides, stopping the hose from dragging the pump…

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When samurai tested swords on strangers
History

When samurai tested swords on strangers

Some samurai practiced tsujigiri, or “crossroads killing,” testing a new sword by attacking an unsuspecting passerby.

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Halo's visor became part of how players use the world
Games

Halo's visor became part of how players use the world

For Halo Infinite, the team developed the visor display into an in-world interface language rather than a set of disconnected screen elements. Menus and…

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Even America's inches are defined in metric
Travel

Even America's inches are defined in metric

The international inch is exactly 2.54 centimeters, making a foot exactly 0.3048 meters. American travelers still encounter miles and Fahrenheit, but the…

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Why IKEA stores feel like confusing mazes
Economy

Why IKEA stores feel like confusing mazes

The winding route can keep shoppers browsing long enough to find things they never planned to buy. More wandering means more chances for an extra item to land…

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