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Why vacation souvenirs end up in the junk drawer
Travel

Why vacation souvenirs end up in the junk drawer

On vacation, a little landmark figurine can feel like a treasured keepsake; back home, it often becomes dust-catching clutter.

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The meter stopped depending on a metal ruler
Science

The meter stopped depending on a metal ruler

Its definition now uses the distance light travels in a precisely specified fraction of a second. Instead of protecting one physical object as the ultimate…

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Why mathematicians invented imaginary numbers
Science

Why mathematicians invented imaginary numbers

When a problem asks for a number that squares to −1, imaginary numbers supply one: i. That extra kind of number also makes it easier to track things that…

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Projecting your vocal cords to make a hollow wooden dummy appear incredibly conversational
Culture & entertainment

Projecting your vocal cords to make a hollow wooden dummy appear incredibly conversational

Ventriloquists make the voice seem to come from the dummy by speaking with little visible lip movement while animating its mouth and gestures.

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Rolling a surprisingly heavy resin sphere down an oiled lane to aggressively smash pins
Games

Rolling a surprisingly heavy resin sphere down an oiled lane to aggressively smash pins

Players use shared gear and cheer each other on while trying to keep the ball out of the side gutters.

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Bird droppings became one of Peru's great exports
Economy

Bird droppings became one of Peru's great exports

Seabirds left thick deposits of guano on dry offshore islands, preserving nutrients that farmers elsewhere desperately wanted. In the 19th century, harvesting…

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Watching the massive global oceanic bodies shift continually due to invisible lunar gravity
Science

Watching the massive global oceanic bodies shift continually due to invisible lunar gravity

The Moon’s pull is a little stronger on Earth’s near side than on its far side, stretching the oceans into bulges on both sides of the planet. As Earth turns,…

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A familiar name can come from the wrong mental folder
Psychology

A familiar name can come from the wrong mental folder

Research on misnaming finds that people often substitute a name from the same relationship category, such as another family member. Familiarity makes a name…

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Waving back enthusiastically at a completely random stranger who was looking behind you
Psychology

Waving back enthusiastically at a completely random stranger who was looking behind you

The wave happens because your brain fills in the missing information fast: a hand goes up, and you treat it as a message addressed to you. The awkwardness…

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Striking smooth colorful resin spheres with a long wooden stick on a green felt surface
Games

Striking smooth colorful resin spheres with a long wooden stick on a green felt surface

Players use a chalked cue to send numbered balls into pockets, calculating angles and rebounds across the table.

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The wealthy once hired people to live as garden hermits
Economy

The wealthy once hired people to live as garden hermits

The garden hermit was hired as part of the scenery. Landowners wanted a rustic, melancholy figure among the plants, and some workers had to let their hair…

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Smashing brightly painted wooden spheres through tiny wire arches scattered across a lawn
Games

Smashing brightly painted wooden spheres through tiny wire arches scattered across a lawn

The genteel lawn game pairs afternoon-tea manners with the ruthless tactic of knocking an opponent's ball into the bushes.

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The childhood thrill of hiding—and waiting forever
Games

The childhood thrill of hiding—and waiting forever

The hiding spot may feel like a triumph at first, but the thrill fades when staying quiet and undetected turns into a long, boring wait.

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Why hallway strangers mirror your every move
Psychology

Why hallway strangers mirror your every move

A stranger shifts their pace, and you may adjust yours before you consciously decide to. People automatically pick up and echo some of one another’s…

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An endless decimal does not have to contain your phone number
Science

An endless decimal does not have to contain your phone number

Pi would contain every finite digit string if it is normal in base ten, meaning digit patterns occur with the expected frequencies. That property has not been…

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Why a cartoon marathon can leave you feeling empty
Culture & entertainment

Why a cartoon marathon can leave you feeling empty

Hours in a dark room can scramble your sense of time, so when the marathon ends, the sudden return to ordinary life can feel disorienting and oddly hollow.

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Assigning profound personal meaning to completely random numerical sequences is remarkably common
Myths & mysteries

Assigning profound personal meaning to completely random numerical sequences is remarkably common

A repeating number can feel like cosmic confirmation, while the many ordinary timestamps you glanced at fade from memory.

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An unused inkjet can fail precisely because it sat idle
Technology

An unused inkjet can fail precisely because it sat idle

Ink can dry around tiny printhead nozzles, leaving gaps or blocking the flow when the printer finally gets a job. The deadline makes the failure feel…

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