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A kabaddi raid comes with an audible breath timer
Games

A kabaddi raid comes with an audible breath timer

Under the traditional cant rule, a raider chants 'kabaddi' without a break in breath while entering the opponents' half. They must tag defenders and get back…

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Agatha Christie secretly wrote romance novels
Culture & entertainment

Agatha Christie secretly wrote romance novels

For more than 20 years, Christie published bittersweet romance novels under the pseudonym Mary Westmacott, keeping her identity secret from the public.

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Patchouli gets its scent from fermented leaves
Economy

Patchouli gets its scent from fermented leaves

Fresh leaves have little of patchouli’s recognizable musk. The scent develops only after the leaves are fermented, dried, and sometimes aged before…

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Briscola demands the removal of eights, nines, and tens
Games

Briscola demands the removal of eights, nines, and tens

Briscola uses a 40-card deck, with the eights, nines, and tens removed from a standard deck. Its card rankings also differ from those many players expect:…

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Jane Austen published her novels without her name
Culture & entertainment

Jane Austen published her novels without her name

Sense and Sensibility appeared as “By a Lady,” while Pride and Prejudice was credited to “The Author of Sense and Sensibility.” Her identity became public…

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Why crocodile farms keep animals in isolation
Economy

Why crocodile farms keep animals in isolation

A crocodile that fights its neighbor can ruin the belly scales buyers want for expensive handbags. So farms give the animals separate pens, protecting the…

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Why mixing metals can destroy a cooling system
Technology

Why mixing metals can destroy a cooling system

When dissimilar metals such as copper and aluminum touch in a fluid loop, they can trigger galvanic corrosion: one metal loses electrons and deteriorates,…

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Platinum is far rarer than gold
Science

Platinum is far rarer than gold

Gold may be more plentiful in the mines partly because it can occur in richer deposits. Platinum is often spread through rock in thinner concentrations, so…

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How prions make healthy proteins turn deadly
Health

How prions make healthy proteins turn deadly

A prion is a protein folded into the wrong shape, and that shape can make nearby normal proteins misfold too. As more proteins change shape, damage…

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Phantom hitchhikers always ask for a ride in the rain
Myths & mysteries

Phantom hitchhikers always ask for a ride in the rain

In the legend, the passenger disappears from the back seat before reaching a destination, often after being picked up on a rainy night.

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Snowshoes distribute human weight across soft powder
Transport

Snowshoes distribute human weight across soft powder

Snowshoes spread your weight across a much larger patch of snow. That lowers the pressure on each square inch, so your feet sink less; the trick is not…

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Travois frames dragged goods without any rollers
Transport

Travois frames dragged goods without any rollers

A travois suspends a load between two long poles, whose ends drag along the ground as the frame moves. The poles spread the weight and slide over rough…

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Mind reading works best between completely bored twins
Myths & mysteries

Mind reading works best between completely bored twins

Stories of spontaneous telepathy often involve twins or close partners, supposedly when both are doing nothing.

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Why theatrical green rooms aren't usually green
Culture & entertainment

Why theatrical green rooms aren't usually green

The term’s origin is disputed: it may refer to young or unprepared actors, or to green baize cloth once used to protect costumes.

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A major-league baseball still gets 108 stitches by hand
Games

A major-league baseball still gets 108 stitches by hand

Two leather pieces wrap around the ball and are joined with red thread, creating the familiar raised seams. Those seams aren't merely decorative: they're the…

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Microscopic crystal structures change over time
Technology

Microscopic crystal structures change over time

A timing crystal’s frequency can drift as it ages, partly because internal stresses build up. The result is a clock that gradually falls out of sync.

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Storm was assembled from two abandoned superhero ideas
Culture & entertainment

Storm was assembled from two abandoned superhero ideas

Dave Cockrum and Len Wein combined a cat-themed woman's visual design with the weather powers of a proposed male character called Typhoon. The unused pieces…

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Acid paste prevents metal from oxidizing
Technology

Acid paste prevents metal from oxidizing

Flux removes oxide from metal surfaces during soldering, helping molten solder form a solid bond. Without it, heat can quickly create oxidation that…

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