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The green billiards table remembers an outdoor game
Games

The green billiards table remembers an outdoor game

Billiards developed from earlier lawn games, with green cloth representing grass when play moved indoors. Players originally pushed balls with mace-like…

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Why squaring a circle is impossible
Science

Why squaring a circle is impossible

With only a compass and straightedge, you can build lengths through a limited set of geometric steps. Squaring a circle exactly would require a length…

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Modern magical rune casting was actually invented in the nineteen eighties by a guy named Ralph
Myths & mysteries

Modern magical rune casting was actually invented in the nineteen eighties by a guy named Ralph

Vikings used runes for writing, but the familiar fortune-telling practice took shape in 1982, when Ralph Blum's book assigned mystical meanings to the…

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Zelda Breath of the Wild stasis heavily multiplies force
Games

Zelda Breath of the Wild stasis heavily multiplies force

Striking a frozen object stores kinetic energy; when time resumes, that energy sends it flying across the map.

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Sold overpriced esoteric skincare to wealthy nobles
Myths & mysteries

Sold overpriced esoteric skincare to wealthy nobles

His exclusive European lodges promised physical perfection, while he sold French aristocrats costly facial serums and beauty creams.

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Katamari rolling uses sticky physics to hoard junk
Culture & entertainment

Katamari rolling uses sticky physics to hoard junk

In Katamari, anything small enough for the ball to pick up sticks to it, making it grow until it can collect larger objects—from paper clips to skyscrapers.

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Frequency division creates distinct transmission lanes
Technology

Frequency division creates distinct transmission lanes

Each signal gets its own frequency band, so receivers can tune in to one stream while filtering out others sharing the same medium.

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Magnetic fields loop continuously without ever ending
Science

Magnetic fields loop continuously without ever ending

Snap a bar magnet in half and you do not get a north piece and a south piece. Each fragment becomes a smaller magnet with both ends, because its magnetic…

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Why a friend's success can feel complicated
Psychology

Why a friend's success can feel complicated

When a stranger succeeds, it’s news. When your friend does, their life becomes a nearby measuring stick: you share enough context to imagine what their win…

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Why AM radio travels farther after dark
Culture & entertainment

Why AM radio travels farther after dark

After dark, changes in the ionosphere let AM signals travel farther, sometimes carrying stations from hundreds of miles away.

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Snatching speeding arrows out of the air
Culture & entertainment

Snatching speeding arrows out of the air

Some illusionists attempt to catch a sharp, speeding arrow just before it reaches their chest—a stunt where a mistimed grab could cause severe injury.

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John Carmack built Mario 3 for Nintendo—and got rejected
Games

John Carmack built Mario 3 for Nintendo—and got rejected

Before Doom, Carmack recreated Super Mario Bros. 3’s smooth side-scrolling on DOS PCs to pitch Nintendo. The company praised the technology but kept its games…

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London's first Underground trains had no windows
Transport

London's first Underground trains had no windows

The designers assumed there was nothing to see in a brick tunnel, so the 1890 carriages had no windows and were heavily upholstered. The claustrophobic ride…

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Peak app traffic causes massive digital lag
Myths & mysteries

Peak app traffic causes massive digital lag

During hyped celestial events, a surge of simultaneous logins can overwhelm app servers. The culprit is inadequate web hosting, not bad cosmic energy.

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BioShock makes its political argument part of the place you explore
Games

BioShock makes its political argument part of the place you explore

Rapture was built as a city where exceptional people could escape outside control. You arrive after that promise has collapsed, reading its ideals on posters…

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When whale teeth were currency in Fiji
Economy

When whale teeth were currency in Fiji

A sperm whale's polished tooth could help seal a royal marriage or peace treaty in Fiji. These rare objects, called tabua, were valuable enough for major…

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Why some display cables have unused wires
Technology

Why some display cables have unused wires

Some display cables include dedicated conductors for network signals, but few devices use that feature, leaving the wires idle.

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Cardinal air starts debates to play devil's advocate
Myths & mysteries

Cardinal air starts debates to play devil's advocate

They may argue a position they don't even believe just for the intellectual sparring, then drop it the moment you agree with them.

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