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Thomas Hardy left a character literally hanging from a cliff
Culture & entertainment

Thomas Hardy left a character literally hanging from a cliff

In A Pair of Blue Eyes, Henry Knight clings to a cliff while rescue remains uncertain. The scene makes the familiar suspense metaphor physical. Serialized…

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Reality broadcasts completely fake conversations
Culture & entertainment

Reality broadcasts completely fake conversations

Editors can splice remarks recorded on different days into a single exchange, making it look as if an argument happened that way.

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Movie ratings are an organized judgment call by parents
Culture & entertainment

Movie ratings are an organized judgment call by parents

The American ratings board reviews films with parents' expectations in mind, considering elements such as language, sex and violence. Individual raters are…

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Banking's old code is too important to casually replace
Technology

Banking's old code is too important to casually replace

COBOL dates to 1959, yet it still runs important financial systems. Replacing a working program means reproducing years of business rules without breaking…

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Rome’s calendar had a legendary winter-sized gap
History

Rome’s calendar had a legendary winter-sized gap

Roman tradition credited Romulus with a ten-month calendar beginning in March, followed by winter days outside the named months. Later reforms added January…

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How a number can become a copyrighted key
Science

How a number can become a copyrighted key

The digits matter because software can treat a number as instructions for unlocking a program. If those instructions reveal the key, publishing the number may…

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Franklin joked that Paris should rediscover sunrise
History

Franklin joked that Paris should rediscover sunrise

His 1784 satire calculated the candles Parisians could save by getting up earlier. He even proposed bells and restrictions on shutters to encourage the…

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A CD's laser reads through the plastic you can touch
Culture & entertainment

A CD's laser reads through the plastic you can touch

The shiny disc contains a patterned data layer protected by a transparent plastic substrate. The player focuses its laser through that material to detect…

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Zippers were sold as a faster way to dress
Technology

Zippers were sold as a faster way to dress

Early ads sold the zipper as a time-saver for men fastening their trousers, portraying buttons as an unnecessary delay.

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The year ten days vanished from the calendar
History

The year ten days vanished from the calendar

The Julian calendar had drifted about ten days out of sync with the seasons, so the Gregorian reform corrected the date. In countries adopting it in October…

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Ice baths can ease soreness while blunting muscle growth
Health

Ice baths can ease soreness while blunting muscle growth

Feeling less sore and adapting to training are not the same outcome. Studies of regular cold-water immersion after strength workouts have found reduced…

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Stainless steel can still turn rusty
Science

Stainless steel can still turn rusty

Stainless steel’s defense is a microscopic film of chromium oxide. Chromium reacts with oxygen to build the thin shield, and a small scratch can expose fresh…

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Why pure gold is too soft for most jewelry
Science

Why pure gold is too soft for most jewelry

Pure gold is soft enough to scratch or bend more easily than most jewelry can handle. Jewelers mix in harder metals such as copper or silver to make it…

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Why revolving doors save energy
Transport

Why revolving doors save energy

Each panel acts like a moving wall: as people pass through, it blocks a direct opening for outside air to rush in. Passengers get through; the building's…

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Numerology ignores the arbitrary origin of modern calendars
Myths & mysteries

Numerology ignores the arbitrary origin of modern calendars

Numerology relies on dates from a human-made calendar; one month was even named for a Roman emperor.

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Fears surrounding Friday the thirteenth cause economic harm
Myths & mysteries

Fears surrounding Friday the thirteenth cause economic harm

Some estimates put the economic cost of Friday-the-13th fears near $1 billion a year, as people avoid flying, signing documents, or investing.

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Chess pieces weren't standardized for centuries
Games

Chess pieces weren't standardized for centuries

Before the Staunton design became standard, chess pieces varied by region, and unfamiliar carvings could make international matches confusing.

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Longest published novel features over ten thousand pages
Culture & entertainment

Longest published novel features over ten thousand pages

The record-holder is a sprawling work of French fiction that runs to more than 10,000 pages.

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