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Carbon makes up roughly a fifth of your body
Health

Carbon makes up roughly a fifth of your body

It appears in the frameworks of proteins, fats, carbohydrates, and DNA. Oxygen contributes more of the body's mass, largely because we contain so much water,…

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The 1968 demo that predicted the modern office
Technology

The 1968 demo that predicted the modern office

Douglas Engelbart unveiled the computer mouse, hypertext, word processing and video conferencing in a single 90-minute presentation.

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An airbag has less than a blink to do its job
Transport

An airbag has less than a blink to do its job

NHTSA describes inflation taking less than one-twentieth of a second. A crash sensor triggers the inflator, creating a cushion before the occupant strikes the…

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How much of your body is actually blood
Health

How much of your body is actually blood

Blood is only part of your body's total mass, even though it continually travels through nearly every region. At about 7–8% of body weight, it would weigh…

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This parachute brings down the whole airplane
Transport

This parachute brings down the whole airplane

Cirrus aircraft can carry a rocket-deployed parachute attached to the airframe. Once deployed within its operating limits, it lowers the aircraft with the…

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Fred Rogers took the KKK to court over a parody
Culture & entertainment

Fred Rogers took the KKK to court over a parody

Rogers used copyright law against a KKK-affiliated group that made a racist parody of his show. The legal action helped stop the group from spreading it.

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Fort Knox's gold has been checked without opening every vault at once
Economy

Fort Knox's gold has been checked without opening every vault at once

Treasury testimony describes a 1974 audit covering about 21% of the bars at Fort Knox and later continuing audit procedures. Physical inventories, assays,…

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Dark humor takes more brainpower than you think
Psychology

Dark humor takes more brainpower than you think

A dark joke asks your mind to hold two meanings at once: the awful literal one and the unexpected, harmless twist. Catching the gap—and deciding the speaker…

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Men can lactate under extreme conditions
Health

Men can lactate under extreme conditions

In rare extreme conditions, hormonal changes can raise prolactin, the hormone that signals the mammary glands to make milk. Men have mammary glands too, so…

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Pineapples were once rented as status symbols
History

Pineapples were once rented as status symbols

Growing pineapples in Georgian England cost so much that the fruit became a status symbol. People who couldn’t afford to buy one rented it for dinner…

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A few gigabytes once needed a cabinet-sized IBM drive
Technology

A few gigabytes once needed a cabinet-sized IBM drive

IBM's 3380, announced in 1980, stored about 2.52 billion bytes in a large cabinet. Thin-film recording heads helped make that capacity possible. The…

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IBM sold the PC business that helped define its name
Economy

IBM sold the PC business that helped define its name

Lenovo's acquisition, announced in 2004 and completed in 2005, included the ThinkPad business. The announced consideration combined cash, shares, and assumed…

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Stonehenge builders predated the mystical Celtic druids by several thousand years of ancient history
Myths & mysteries

Stonehenge builders predated the mystical Celtic druids by several thousand years of ancient history

Stonehenge’s iconic stone circle dates to around 2500 BCE, while Celtic Druids appeared in Britain around 300 BCE—roughly 2,200 years later.

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Ancient Egyptian protective amulets were mass produced in rudimentary factories like cheap souvenirs
Myths & mysteries

Ancient Egyptian protective amulets were mass produced in rudimentary factories like cheap souvenirs

Protective scarabs and Eye of Horus amulets were made from faience using standardized molds, turning sacred objects into repeatable products.

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'Ladies from Hell' sold a fearsome image of Scottish soldiers
History

'Ladies from Hell' sold a fearsome image of Scottish soldiers

The phrase appeared as the title of Robert Douglas Pinkerton's 1918 war account, linking Highland dress with a reputation for ferocity. Its supposed German…

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George Washington ran a booming whiskey business
Economy

George Washington ran a booming whiskey business

Washington’s whiskey business was booming even after he helped crush the Whiskey Rebellion. In 1799, his Mount Vernon distillery turned out 11,000 gallons,…

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Australian crocodiles can gallop
Science

Australian crocodiles can gallop

A galloping crocodile lifts its belly clear of the ground and bounds on its legs, giving it a quick, springy burst of speed. That is very different from the…

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New Zealand has an 85-letter hill name
Travel

New Zealand has an 85-letter hill name

The 85-letter name is listed by Guinness as the world's longest place name; it roughly tells of a Māori chief playing a flute for his loved one.

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