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Iceland's currency crash made McDonald's ingredients too expensive
Travel

Iceland's currency crash made McDonald's ingredients too expensive

The franchise imported much of its supply from Germany. After the krona plunged during the financial crisis, those ingredients became much costlier in local…

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You can talk in your sleep at any stage
Health

You can talk in your sleep at any stage

Speaking and being awake are not an all-or-nothing package: the brain can produce words while a person remains asleep. That is why sleep talking can happen in…

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Why Super Game Boy games ran too fast
Technology

Why Super Game Boy games ran too fast

The Super Game Boy ran games about 2.4% faster because its clock speed didn't match the handheld's. The small difference could throw off the music's tempo.

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Cute animal pictures can sharpen your focus
Psychology

Cute animal pictures can sharpen your focus

In a 2012 experiment, people performed a delicate motor task better after looking at puppies and kittens than after looking at adult animals. Another task…

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French nobles had to dress expensively by law
History

French nobles had to dress expensively by law

Sumptuary laws made rank visible by limiting who could wear which fabrics. Nobles also faced pressure to look wealthy, so the rules meant keeping up…

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Nada is the Spanish concept of absolute pure nothingness
Myths & mysteries

Nada is the Spanish concept of absolute pure nothingness

In this contemplative tradition, nada means seeking a total void: practitioners aim to reject desires, thoughts, and concepts until the mind is empty.

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Margarine is an oil-and-water engineering problem
Health

Margarine is an oil-and-water engineering problem

A spread needs to stay firm in the tub yet yield under a knife. Makers combine fats with different melting properties and hold water droplets in the mixture…

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The word visa once meant paper seen
Transport

The word visa once meant paper seen

Visa comes from a Latin phrase meaning “paper that has been seen.” It began as an official mark confirming a document had been checked—bureaucracy, in other…

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Why a jellyfish can vanish on a sunny beach
Science

Why a jellyfish can vanish on a sunny beach

Sun and sand can dry a jellyfish until little more than a clear-looking film remains. Its stinging cells can still fire even after it dies, so a remnant…

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What your heart actually does when you sneeze
Health

What your heart actually does when you sneeze

A sneeze changes pressure in your chest, which can briefly influence the vagus nerve, a nerve that helps regulate heart rhythm. That may delay the next beat…

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An exercise study found changes in gut microbes that faded afterward
Health

An exercise study found changes in gut microbes that faded afterward

Previously sedentary adults completed six weeks of exercise, then returned to inactivity. Researchers observed changes in gut microbes and, in lean…

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Why watching someone fall can make you laugh
Psychology

Why watching someone fall can make you laugh

A fall is a sudden break in the scene, and surprise can spill out as laughter when your mind quickly reads the mishap as harmless. The laugh helps discharge…

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Why a sudden distraction can ruin a new memory
Psychology

Why a sudden distraction can ruin a new memory

You remember a name, turn to answer a text, and the name is gone. New memories are fragile: attention helps hold the pieces together, and a sudden switch…

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Sega's Master System accepted games thinner than cartridges
Games

Sega's Master System accepted games thinner than cartridges

Early models had a slot for Sega Cards as well as a cartridge slot. The thin cards held less data, so the compact format imposed tighter limits on games. The…

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There’s trace gold in your hair
Health

There’s trace gold in your hair

A growing hair shaft can take up trace elements from the body, leaving minute amounts of gold behind. It’s more like a chemical fingerprint than hidden…

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Green beer's famous party happened in New York
Travel

Green beer's famous party happened in New York

Physician Thomas Curtin served green beer at a New York St. Patrick's Day celebration in 1914, an early documented example of the custom. The color made an…

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Leonardo's notes often needed a mirror to read normally
History

Leonardo's notes often needed a mirror to read normally

He wrote many passages right to left, reversing the letters as well as the direction of the line. Being left-handed may help explain why this was comfortable,…

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Turkey isn’t the reason you feel sleepy after dinner
Health

Turkey isn’t the reason you feel sleepy after dinner

The post-dinner sleepiness is more about the meal than a magical turkey effect: turkey contains roughly as much tryptophan as other meats, while a large,…

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