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Peruvian geoglyphs were created by scraping red pebbles
History

Peruvian geoglyphs were created by scraping red pebbles

The makers didn’t need paint: they scraped away dark surface pebbles to reveal lighter ground beneath. The desert drawing was made by removing the surface,…

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A famous study about honesty was undone by questions about its own data
Psychology

A famous study about honesty was undone by questions about its own data

A 2012 paper claimed that signing an honesty declaration at the top of a form reduced cheating. Analysts later found troubling patterns in a key dataset, and…

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Hospital staff record identical times
Myths & mysteries

Hospital staff record identical times

When multiple births happen close together, staff may record identical birth times even if one baby arrived later. Those few minutes can affect how the births…

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Why moving walkways make you slow down
Transport

Why moving walkways make you slow down

When people step onto a moving walkway, they unconsciously slow their walking pace to compensate for its motion. So although it feels like you’re moving…

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Why willpower fails when candy sits on your desk
Psychology

Why willpower fails when candy sits on your desk

A bowl of candy on your desk keeps asking for a decision. Every glance puts the temptation back in your attention, and resisting it takes effort each time.…

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Scorpio glides through grocery stores without making sound
Myths & mysteries

Scorpio glides through grocery stores without making sound

Scorpio lore casts them as stealthy shoppers: they supposedly slip through crowded aisles so quietly that someone may turn around and find them holding the…

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Slashing government budgets severely restricts growth
Economy

Slashing government budgets severely restricts growth

When a government cuts spending in a slump, it can also cut payments to workers and businesses. They then have less to spend, which can mean fewer sales and a…

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The secret passages built to hide persecuted priests
History

The secret passages built to hide persecuted priests

Catholic families risked arrest for sheltering persecuted clergy, so some mansions had hollow walls and trapdoors where priests could hide. The hidden spaces…

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Lindbergh wasn't the first to fly the Atlantic nonstop
Transport

Lindbergh wasn't the first to fly the Atlantic nonstop

John Alcock and Arthur Brown crossed from Newfoundland to Ireland in 1919, landing their modified bomber in a bog. Lindbergh's 1927 achievement was a solo…

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Hammond organs use spinning metal tonewheels for audio
Culture & entertainment

Hammond organs use spinning metal tonewheels for audio

Scalloped metal discs spin inside the organ, and electromagnetic pickups read their vibrations to produce its distinctive sound.

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Why tiny apartments can cost luxury prices
Economy

Why tiny apartments can cost luxury prices

A developer can earn more by fitting more homes into a small footprint. In major cities, micro-units as small as 200 square feet are marketed to young…

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Ukiyo-e woodblocks mass produced masterpieces
History

Ukiyo-e woodblocks mass produced masterpieces

Carved woodblocks let Japanese artisans print the same detailed, multicolored images again and again. Waves and actors could reach far more people than a…

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Officer Tenpenny controls the entire city underworld
Games

Officer Tenpenny controls the entire city underworld

In Grand Theft Auto: San Andreas, corrupt cop Frank Tenpenny controls territory, pushes gangs into violence, and forces the protagonist to do his dirty work…

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Why chicken buses look like rolling murals
Transport

Why chicken buses look like rolling murals

Many chicken buses began as retired school buses, then local operators rebuilt and painted them in bold colors. The murals give each bus its own look amid the…

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Drive-up window lanes trap idle vehicles in endless lines
Transport

Drive-up window lanes trap idle vehicles in endless lines

Those cars are stuck in a single-file queue, so one slow order freezes the whole line. It’s a traffic jam with a speaker box and nowhere to go.

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Japan has a museum of face-shaped rocks
Travel

Japan has a museum of face-shaped rocks

The Chinsekikan museum houses more than 1,000 rocks whose natural indentations resemble faces, including one that looks like Elvis Presley.

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Why smart teams miss the obvious in escape rooms
Games

Why smart teams miss the obvious in escape rooms

Some escape-room teams search for elaborate hidden clues while overlooking an obvious one, like a brass key sitting on the center table.

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Radio waves are a kind of light too
Science

Radio waves are a kind of light too

A radio antenna catches an electromagnetic wave and turns it into a tiny electrical signal. The wave’s changing fields nudge electrons in the metal back and…

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