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Wipeout made four giant red balls look deceptively crossable
Culture & entertainment

Wipeout made four giant red balls look deceptively crossable

The familiar obstacle asks contestants to move across rounded, unstable surfaces above water. Each landing has to become the setup for the next jump before…

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Egyptian scribes wrote on papyrus because stone was heavy
History

Egyptian scribes wrote on papyrus because stone was heavy

Stone could preserve a message, but it was heavy and fixed in place. Papyrus, made from river-reed pith, was light enough to roll and carry—an ancient…

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Walking and talking can compete for the same attention
Psychology

Walking and talking can compete for the same attention

Walking is well practiced, but keeping balance and choosing steps still involve the brain. Add a demanding verbal task and people can slow down or change…

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Wheel of Fortune Tarot card spells TARO around its edge
Myths & mysteries

Wheel of Fortune Tarot card spells TARO around its edge

The letters can also be read around the circle to form cryptic words, reinforcing the card's image of life as a wheel whose direction you can't control.

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EVE Online added Excel to the game
Games

EVE Online added Excel to the game

EVE Online's complex in-game economy led players to rely on spreadsheets, so its developers partnered with Microsoft to bring Excel integration into the game.

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Flipping a besom upside down forcibly ejects guests
Myths & mysteries

Flipping a besom upside down forcibly ejects guests

In folk belief, setting a broom bristles-up by the exit is a pointed hint that guests should leave.

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Life path 1 means you lead everything forever
Myths & mysteries

Life path 1 means you lead everything forever

In numerology, a life path 1 is associated with independence and leadership—but that bossy streak can make collaboration a challenge.

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Coca-Cola began in the era of coca-based tonics
History

Coca-Cola began in the era of coca-based tonics

Its early formula used coca-leaf extract containing cocaine, and advertising presented the drink as a tonic. A historical NIDA account dates the switch to…

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Audio diaries are scattered terribly
Games

Audio diaries are scattered terribly

Some facility workers’ final recordings ended up in remote air vents, making the audio diaries difficult to find.

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Why ferries around the Canaries watch for sleeping whales
Transport

Why ferries around the Canaries watch for sleeping whales

Sperm whales rest near the surface, where fast ferries can strike them. Around the Canary Islands, operators use sonar, thermal cameras and speed limits to…

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A Kansas salt mine became a film-storage vault
Economy

A Kansas salt mine became a film-storage vault

Rooms left by mining beneath Hutchinson offered stable underground space for storage. Underground Vaults and Storage began using the site in 1959, developing…

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Fort Knox's gold has a bookkeeping price far below the market
Economy

Fort Knox's gold has a bookkeeping price far below the market

The depository holds roughly 147.3 million fine troy ounces, which the U.S. Mint describes as about half the Treasury's stored gold. On the government's…

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Stadium concrete requires several years to fully cure
Culture & entertainment

Stadium concrete requires several years to fully cure

The thousands of tons of concrete in the stands continue curing for years after the arena opens, gradually gaining strength.

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Drones parachute medicine into remote towns
Transport

Drones parachute medicine into remote towns

A delivery drone flies to a location, releases a medicine package, and lets a parachute slow its descent. That avoids the need for a landing strip or a clear…

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Why pools smell like chlorine
Travel

Why pools smell like chlorine

That strong swimming-pool smell usually comes from chloramines, formed when disinfectant reacts with sweat, urine, and other material swimmers bring in. They…

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The fish market discovery that rewrote evolution
History

The fish market discovery that rewrote evolution

In 1938, museum curator Marjorie Courtenay-Latimer spotted an unfamiliar fish among a South African catch. It was a coelacanth, known until then only from…

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When bathing meant gossiping in a giant tub
History

When bathing meant gossiping in a giant tub

In some settings, bathing meant sitting in a large wooden vat with neighbors—and catching up on village gossip.

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Why a good deal can still feel like a loss
Economy

Why a good deal can still feel like a loss

A buyer can get a deal that benefits both sides and still feel cheated if the seller looks too pleased. The seller's smile becomes evidence against a bargain…

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