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Your seatbelt has a ratchet waiting for a sudden pull
Transport

Your seatbelt has a ratchet waiting for a sudden pull

The reel normally pays out webbing so you can move. A quick pull triggers a locking mechanism that engages the reel's teeth; many belts also respond to sudden…

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Swinging pendulums never reach their exact starting heights
Science

Swinging pendulums never reach their exact starting heights

On each swing, some of the pendulum’s motion becomes heat and sound as it pushes through air and rubs at its pivot. With less motion left, it can’t climb as…

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Daily blurbs are the most read section
Myths & mysteries

Daily blurbs are the most read section

The tiny box of vague daily guidance can draw more readers than hard-hitting or investigative reporting.

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Why quarks come in flavors like strange and charm
Science

Why quarks come in flavors like strange and charm

Quark flavor is a physicist’s name for a particle type, not something you can taste. A proton contains two up quarks and one down quark, and that combination…

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Entire residential houses can now be 3D printed in less than twenty-four hours using raw concrete
Technology

Entire residential houses can now be 3D printed in less than twenty-four hours using raw concrete

Large 3D printers extrude concrete in layers to form a home's foundation and walls, sometimes in under a day. That speed refers to the printed structure, not…

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Radio stations loop top tracks to retain short listeners
Culture & entertainment

Radio stations loop top tracks to retain short listeners

A hit may repeat every 90 minutes because stations expect many listeners to tune in for only a 20-minute drive; frequent rotation raises the odds they’ll…

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Why fewer tools can spark better ideas
Psychology

Why fewer tools can spark better ideas

When every tool is available, it is easy to reach for the obvious one. Take options away and you have to study what is actually in front of you: how could…

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Why the same software costs more for bigger companies
Economy

Why the same software costs more for bigger companies

One dashboard, two price tags: a startup might pay $50 while a huge company is quoted $50,000. Some software sellers price the buyer, not just the product.

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When doctors prescribed smelling farts for the plague
History

When doctors prescribed smelling farts for the plague

Blaming plague on foul air, some physicians treated one bad smell as a defense against another: they kept flatulence in jars to inhale. The remedy was,…

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Why Victorian cemeteries were full of weeping willows
History

Why Victorian cemeteries were full of weeping willows

Victorians wanted cemetery landscapes to make grief visible, and the weeping willow did the job with its drooping branches. It was a tree that looked like it…

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Vintage DVI monitor cables featured highly bendable pins
Technology

Vintage DVI monitor cables featured highly bendable pins

The connector's thin pins could bend if you inserted it at an angle, potentially ruining the cable.

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Fixed air implies a rigid set of weird opinions
Myths & mysteries

Fixed air implies a rigid set of weird opinions

Despite their open-minded image, they can treat eccentric opinions as unquestionable; disagreement may only convince them you haven't caught up.

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Tarzan learned a few moves from skateboarders
Culture & entertainment

Tarzan learned a few moves from skateboarders

Animator Glen Keane took inspiration from his skateboarding son and extreme sports, with Tony Hawk influencing the Son of Man sequence. Sliding along a branch…

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Armenian mystic George Gurdjieff forced his wealthy spiritual followers to dig massive ditches and fill them back up
Myths & mysteries

Armenian mystic George Gurdjieff forced his wealthy spiritual followers to dig massive ditches and fill them back up

He used exhausting, pointless labor to jolt elite students out of what he saw as robotic habits and challenge their egos.

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Uranus completely lacks any internal heat source
Science

Uranus completely lacks any internal heat source

Uranus does give off heat, but surprisingly little of the leftover warmth from its formation. Neptune, a similarly sized neighbor, releases much more, so the…

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Why juicy rumors hold social groups together
Psychology

Why juicy rumors hold social groups together

Rumors can bind a group because passing one along signals that you’re part of the circle. People compare what they’ve heard, work out whom to believe, and…

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Backpacking through Europe exploded after global conflicts
Travel

Backpacking through Europe exploded after global conflicts

After global conflicts left cheap military gear in surplus, broke students could travel across Europe with little more than a canvas sack.

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A radio caller can be part of the performance
Culture & entertainment

A radio caller can be part of the performance

Some radio shows use staged calls to guarantee an argument or a comic payoff. A performer supplies the setup, while the host reacts as though the interruption…

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