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Why some pioneering women learned to fly abroad
Transport

Why some pioneering women learned to fly abroad

Some countries offered women access to flight training that schools at home denied them. Learning to fly began with a passport, because the biggest obstacle…

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Why people freezing to death sometimes undress
Health

Why people freezing to death sometimes undress

In severe hypothermia, the body’s effort to keep heat in can fail: blood vessels near the skin relax and let warmer blood flow outward. That sudden warmth can…

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When emojis need an expert witness in court
Technology

When emojis need an expert witness in court

As emojis appear in professional communications, lawyers increasingly hire linguistic experts to interpret them in court. A thumbs-up or eggplant emoji can…

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Your nose can remember thousands of different smells
Health

Your nose can remember thousands of different smells

Smell signals travel from the nose to brain areas involved in emotion and memory, including the hippocampus and amygdala. A familiar scent can therefore bring…

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Myelin sheaths insulate fragile nerve fibers
Health

Myelin sheaths insulate fragile nerve fibers

A nerve’s axon carries a signal, and myelin covers sections of it with a fatty insulating layer. The signal can move quickly from gap to gap along the axon,…

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Paranoid astrologers predicted the end of the world in 1999 due to a rare grand cross planetary alignment in the sky
Myths & mysteries

Paranoid astrologers predicted the end of the world in 1999 due to a rare grand cross planetary alignment in the sky

The feared “Grand Fixed Cross” formed in August 1999, but its gravitational pull did nothing. The prediction also leaned on a vague Nostradamus line about a…

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Drinking unpasteurized dirty water for its earthly energies
Myths & mysteries

Drinking unpasteurized dirty water for its earthly energies

The trend involves paying high prices for untreated spring water; enthusiasts prize its supposed earthly energy, though the water can contain natural microbes.

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Cryptography uses salt to scramble encrypted information
Technology

Cryptography uses salt to scramble encrypted information

A random salt is added before data is hashed, so identical inputs produce different hashes. The salt doesn’t encrypt the data; it makes matching hashes harder…

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Soap operas build their production around keeping up with the next episode
Culture & entertainment

Soap operas build their production around keeping up with the next episode

Regular sets, rehearsed blocking and fast shooting let a continuing drama produce far more finished screen time than many prestige series. The difference is a…

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Why strangers' lives look better on social media
Technology

Why strangers' lives look better on social media

Social platforms expose you to polished highlights from strangers around the world, making it easy to feel that everyone else is having a better time.

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Your camera can see infrared—so it has to be blinded
Technology

Your camera can see infrared—so it has to be blinded

Digital camera sensors can detect infrared, so manufacturers add filters to block it from regular photos. You can test this by pointing a remote control at a…

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The Sims remembers exactly where your sunburn should stop
Games

The Sims remembers exactly where your sunburn should stop

In The Sims 4: Island Living, sunbathing can leave tan lines matching the outfit a Sim was wearing. Covered skin stays protected while exposed areas change…

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Duck Duck Goose has different rules around the world
Games

Duck Duck Goose has different rules around the world

In some versions, the tapped player runs in the opposite direction around the circle, making a collision possible.

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A wolverine's jaws let it eat from winter's freezer
Science

A wolverine's jaws let it eat from winter's freezer

Frozen carcasses can remain food when other meals are scarce. Wolverines have powerful jaws and teeth suited to tearing at tough remains, and they cache food…

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Samuel Morse knew the cost of news arriving too late
Technology

Samuel Morse knew the cost of news arriving too late

In 1825, while he was away working as a painter, letters brought news of his wife's illness and death. He returned after her burial. Years later, his…

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Gemini folks abandon their career aspirations every week
Myths & mysteries

Gemini folks abandon their career aspirations every week

In the horoscope stereotype, a Gemini might switch from aspiring baker to deep-sea diver in a single week.

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A duty-free bag can be the wrong souvenir to bring into Kenya
Travel

A duty-free bag can be the wrong souvenir to bring into Kenya

Kenya's plastic-carrier-bag restrictions extend to travelers entering the country. Its environment authority says incoming passengers must leave covered…

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Why sharks bite undersea cables
Technology

Why sharks bite undersea cables

Sharks have been blamed for biting undersea cables, possibly because they detect the magnetic fields around the lines.

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