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Teller took a copied illusion to court—and won
Culture & entertainment

Teller took a copied illusion to court—and won

His Shadows routine makes a real rose appear to lose parts as the magician cuts its projected shadow. A court protected the routine's dramatic expression in a…

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Electron microscopes shoot beams through a harsh vacuum
Technology

Electron microscopes shoot beams through a harsh vacuum

Air molecules can interfere with the electron beam, so the sample chamber is evacuated before imaging.

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Millipedes coordinate hundreds of tiny legs
Travel

Millipedes coordinate hundreds of tiny legs

Millipedes don't have a thousand legs, but their hundreds of legs move in synchronized waves to carry their long, armored bodies forward.

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Why game currencies leave you with useless change
Games

Why game currencies leave you with useless change

Games use premium currencies such as gems or points to make spending feel less like handing over real money. Because currency bundles rarely match item prices…

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Why game tables are covered in felt
Games

Why game tables are covered in felt

Felt fibers create friction that slows pieces before they slide off the table. Without it, a small bump could send tokens skittering into hard-to-reach corners.

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Why bears roar for marshmallows
Culture & entertainment

Why bears roar for marshmallows

A towering grizzly standing on its hind legs to roar may just be reaching for marshmallows. Wranglers sometimes dangle a stick covered in the soft sweets just…

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Postage coupons gave Charles Ponzi his sales pitch
Economy

Postage coupons gave Charles Ponzi his sales pitch

International reply coupons let someone abroad exchange a prepaid coupon for return postage. Ponzi claimed he could profit from price differences between…

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UN sanctions need national governments to make them bite
History

UN sanctions need national governments to make them bite

The Security Council can impose binding measures, but member states implement them through their own systems. An asset freeze therefore becomes real when…

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How astronauts watch movies in orbit
Transport

How astronauts watch movies in orbit

Astronauts watch movie files on laptops or other onboard screens, with headphones keeping the soundtrack to themselves. The tricky part isn’t the screen…

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Esoteric paperwork is usually covered in coffee rings
Myths & mysteries

Esoteric paperwork is usually covered in coffee rings

Even sacred diagrams end up sharing desk space with an oversized coffee mug—and its rings.

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Barbie has a surprisingly ordinary full name
History

Barbie has a surprisingly ordinary full name

Her full name is Barbara Millicent Roberts. For a doll famous for changing careers and wardrobes, the name is refreshingly ordinary.

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Why hearing your own name feels so good
Psychology

Why hearing your own name feels so good

Your name is a tiny signal that the conversation has turned toward you. It cuts through other words because it is personally meaningful, so hearing it can…

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Enron hid billions behind Star Wars names
Economy

Enron hid billions behind Star Wars names

To keep losses off its books, Enron routed them through shell companies with names like “Jedi” and “Chewco.” The Star Wars labels hid a very real financial…

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Why wealthy women traveled with personal maids
Transport

Why wealthy women traveled with personal maids

A personal maid handled the packing, dressing, and constant care that formal clothes demanded on a long journey. With trunks full of outfits and fastenings…

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Hostels were pioneered by a German schoolteacher originally
Travel

Hostels were pioneered by a German schoolteacher originally

A German schoolteacher came up with the idea to take city children into the countryside without requiring extensive resources.

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Can your face betray a lie
Psychology

Can your face betray a lie

A face can leak the feeling someone is trying to hide: a flash of fear, a strained smile, or tension that doesn’t fit the words. Those cues reveal emotion,…

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African blacksmiths built early drafting furnaces
History

African blacksmiths built early drafting furnaces

Tall clay chimneys pulled air through the furnace in a steady updraft, supplying the heat needed to smelt iron ore. The design let blacksmiths do without…

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Crowd surfing ends in a piece of event logistics
Culture & entertainment

Crowd surfing ends in a piece of event logistics

At the front barrier, security staff can help a surfer down into the working area and direct them along an exit route. The route depends on the venue, rather…

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