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Bed of nails relies entirely on weight distribution math
Myths & mysteries

Bed of nails relies entirely on weight distribution math

Hundreds of nails spread a person's weight across many points, reducing the pressure at each one enough to keep the skin from being pierced.

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Vowels are generated with an entirely open vocal tract
Psychology

Vowels are generated with an entirely open vocal tract

Say “ah”: your mouth makes room for air to pass without a complete closure. Vowels get their distinct sounds from how the tongue and lips shape that open…

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Your earlobes may have no known purpose
Health

Your earlobes may have no known purpose

The upper ear’s curves help funnel sound toward the ear canal; the soft lobe does little of that work. It has no clearly established essential job in hearing,…

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Blisters are your skin's emergency cushion
Health

Blisters are your skin's emergency cushion

Friction can pull the skin’s upper layer away from the one beneath it, leaving a small pocket. Clear fluid collects in that space and cushions the damaged…

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Elephants can use their trunks as snorkels
Science

Elephants can use their trunks as snorkels

An elephant’s trunk is its nose, with the nostrils right at the tip. Keep that tip above water and it can keep drawing air while the rest of the elephant…

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Why sleighs needed bells to warn pedestrians
Transport

Why sleighs needed bells to warn pedestrians

Sleigh runners glide over snow with little noise, so pedestrians had no engine or clatter to warn them. Bells announced the approaching horse before the…

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World War I dressings sometimes had moss inside the gauze
Economy

World War I dressings sometimes had moss inside the gauze

A surviving Red Cross dressing contains sphagnum enclosed in absorbent paper, cotton fibers and an outer wrapping. The moss supplied absorption; the dressing…

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Why margarine was once dyed bright pink
Science

Why margarine was once dyed bright pink

The pink wasn’t a flavor choice: it was part of a fight over margarine’s appearance. Customers could mix a yellow dye capsule into pale margarine at home, but…

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The hidden trick behind a villain’s cape swish
Culture & entertainment

The hidden trick behind a villain’s cape swish

Costumers sew lead fishing weights into the hem, pulling the fabric down so it swishes instead of flapping.

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Hyperloop concepts remain largely theoretical tubes
Travel

Hyperloop concepts remain largely theoretical tubes

Despite the funding and hype, most proposals have not moved beyond small test tracks, and none carry regular commuters.

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When hunting dogs pulled carts
Transport

When hunting dogs pulled carts

A harness let a dog lean its chest into a cart and pull goods on wheels. Hunting dogs already had the strength and training for hard work; the cart just gave…

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Beavers meticulously build intricate protective wooden lodges
Science

Beavers meticulously build intricate protective wooden lodges

Beavers enter their lodges through underwater tunnels, then climb into a raised chamber that stays dry. It’s a home with a moat built into the front door—and…

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North Korea once created its own time zone
Travel

North Korea once created its own time zone

In 2015, North Korea set its clocks 30 minutes behind to distance itself from a time zone imposed during Japanese rule. It synchronized its clocks again in…

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When trains dumped sewage straight onto the tracks
Transport

When trains dumped sewage straight onto the tracks

A hopper toilet sent waste through an opening onto the track below. That simple arrangement explains the old instruction not to use the toilet while a train…

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Early Christian desert fathers practically hallucinated from starvation and called it profound spiritual warfare
Myths & mysteries

Early Christian desert fathers practically hallucinated from starvation and called it profound spiritual warfare

They ate little, slept on dirt, and lived in isolation; their accounts describe terrifying battles with demons appearing as wild beasts or seductive women.…

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A pineapple grows once per fruiting shoot, not once per plant forever
Science

A pineapple grows once per fruiting shoot, not once per plant forever

After the main shoot fruits, side shoots can develop and produce a later crop. Growers can retain such growth for a ratoon harvest or use shoots to start new…

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The deepest dive found a plastic shopping bag
Transport

The deepest dive found a plastic shopping bag

In 2019, an explorer piloted a submersible to the bottom of the Mariana Trench and spotted the bag alongside marine life.

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Shrek turned an ogre into a major studio asset
Culture & entertainment

Shrek turned an ogre into a major studio asset

The 2001 film earned hundreds of millions of dollars worldwide and gave DreamWorks a franchise built around mocking fairy-tale conventions. An abrasive…

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