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Why matter forms a ring around black holes
Transport

Why matter forms a ring around black holes

Gas near a black hole still has sideways motion, so it orbits instead of falling straight in. Collisions and friction drain that motion, heating the gas as it…

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Your genes can jump around the genome
Health

Your genes can jump around the genome

Some stretches of DNA can move to new positions in the genome; these are called transposons. Their movement means DNA is not always a fixed line of…

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Why blast furnaces run for decades
Technology

Why blast furnaces run for decades

The firebrick lining can crack as the furnace cools and contracts, so shutting one down risks costly damage. Some blast furnaces run continuously for more…

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High-grade frankincense costs more per ounce than silver
Myths & mysteries

High-grade frankincense costs more per ounce than silver

Some premium frankincense from specific Omani trees can cost more per ounce than silver, thanks to global demand.

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How croquet brought men and women onto the same field
Games

How croquet brought men and women onto the same field

Introduced in England in the 1850s, croquet was one of the first widely accepted outdoor lawn games where men and women could compete together in public.

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French court cards gave kings historical names
Games

French court cards gave kings historical names

A traditional Parisian pattern associated the kings with figures such as David, Julius Caesar, Alexander, and Charlemagne. Those names belong to that design…

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Tao that can be spoken is not the true absolute Tao
Myths & mysteries

Tao that can be spoken is not the true absolute Tao

The fundamental text of this philosophy starts by completely invalidating itself. It explicitly states that any concept capable of being articulated is…

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Aristocrats refused to share carriages with lower classes
Transport

Aristocrats refused to share carriages with lower classes

Aristocrats used separate carriages to avoid sharing close quarters with poorer travelers. Even on the move, status needed its own seat—and apparently…

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Marginal propensity dictates your odds of spending more
Economy

Marginal propensity dictates your odds of spending more

When someone’s income rises, the marginal propensity to consume tells you how much of the increase they spend rather than save. That helps explain why extra…

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Sophia accidentally created the physical universe
Myths & mysteries

Sophia accidentally created the physical universe

Her error is said to have brought the material realm into being, a realm this account portrays as flawed.

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Why everyone confuses Tower Bridge with London Bridge
Travel

Why everyone confuses Tower Bridge with London Bridge

People mistake Tower Bridge for London Bridge because its neo-Gothic towers are so distinctive. Today’s London Bridge is a much plainer concrete span farther…

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Freight container corrugated walls maximize rigidity
Transport

Freight container corrugated walls maximize rigidity

Those wavy container walls aren’t decoration: each fold stiffens the thin steel against bending. The corrugations make a big box sturdier without making it a…

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Option selects automatically choose optimal attacks for you
Games

Option selects automatically choose optimal attacks for you

By entering several commands in a specific rhythm, players can make the game select a counterattack based on the opponent’s situation, automating part of a…

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Why the same people keep winning radio contests
Culture & entertainment

Why the same people keep winning radio contests

Frequent winners may belong to groups of dedicated contest callers who treat calling in like a full-time job, while most people can't stay on hold for an hour.

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Why your smart thermostat changes the temperature back
Technology

Why your smart thermostat changes the temperature back

Learning thermostats can follow an energy-saving schedule based on your habits, so a manual adjustment may be temporary and the temperature can return to its…

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Why businesses pay for prestigious old area codes
Economy

Why businesses pay for prestigious old area codes

Some businesses pay a premium just to put a prestigious city area code on their phone number. When the phone company can’t assign that code through normal…

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Platinum is viewed as a modern esoteric luxury
Myths & mysteries

Platinum is viewed as a modern esoteric luxury

Traditional texts don't assign platinum a role, so modern astrologers created one, associating the costly metal with supreme, untouchable energy.

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Japanese folding screens block drafts with massive art
History

Japanese folding screens block drafts with massive art

Byōbu could divide a room without building a wall, and their panels helped stop drafts. Painted as continuous scenes, the screens doubled as movable canvases.

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