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How walruses sleep while floating in freezing water
Science

How walruses sleep while floating in freezing water

A walrus can fill air pouches in its throat, giving its head extra buoyancy. That keeps its nose above the water as it naps, without constant paddling. It has…

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How incubators mimic the womb
Technology

How incubators mimic the womb

Incubators help premature babies stay warm by controlling temperature and humidity. Heated water reservoirs and circulating air maintain a carefully…

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Golf balls fly farther with dents than when smooth
Science

Golf balls fly farther with dents than when smooth

A smooth ball sheds the airflow early, leaving a large wake that acts like a parachute pulling backward. Dimples stir the air near the surface and help it…

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A video game lets players display stolen underwear
Games

A video game lets players display stolen underwear

Instead of returning the leader's missing purple underwear, players can put it on display at the autumn festival and provoke an angry bribe.

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Why bananas arrive green—and turn yellow all at once
Technology

Why bananas arrive green—and turn yellow all at once

They’re shipped green and firm to survive transit, then exposed to ethylene gas in sealed chambers to ripen them before sale.

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Why Hansom cab drivers sat on the roof
Transport

Why Hansom cab drivers sat on the roof

The passenger box sat low, so the driver perched behind it on the roof to see over the cab and keep the horse in view. It was a front-row seat for traffic—and…

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Lips dry out because they lack protective oil glands
Health

Lips dry out because they lack protective oil glands

Sebaceous glands supply skin with oils that help slow water loss, but your lips don’t have them. In wind, they have less of that built-in barrier to hold…

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Cheerleading began as a men-only college tradition
Science

Cheerleading began as a men-only college tradition

College cheerleading started with male students leading the crowd’s noise at football games. The job was to get the stands shouting together; synchronized…

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Alpaca fleece is sheared for specialty insulation
Economy

Alpaca fleece is sheared for specialty insulation

The useful part of alpaca fleece is hiding inside each strand: its fibers are hollow, which helps with insulation. It also lacks lanolin, making it an option…

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Why General Radahn uses gravity magic to ride
Games

Why General Radahn uses gravity magic to ride

He mastered gravity magic so he could keep riding his beloved pony without crushing it.

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Biorhythms claim human life cycles are fixed from birth
Myths & mysteries

Biorhythms claim human life cycles are fixed from birth

The 1970s biorhythm fad claimed physical and emotional states followed mathematical cycles from birth, reducing complex moods to sine waves and leaving out…

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Pi possesses absolutely zero mystical properties
Myths & mysteries

Pi possesses absolutely zero mystical properties

Pi is the ratio of a circle's circumference to its diameter, not a mystical code. It also helps calculate a circle's area—or the area of a pizza.

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Leather blinders prevented horses from panicking
Transport

Leather blinders prevented horses from panicking

Blinders block a horse’s side view, where sudden movement from traffic or crowds could startle it. The horse sees more of the road ahead and less of the…

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Why fat-free foods often need extra sugar
Health

Why fat-free foods often need extra sugar

Fat helps give food a rich, smooth mouthfeel, so taking it out can leave a product tasting thinner. Manufacturers may add sugar to help make up for some of…

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Why employers don’t want you discussing pay
Economy

Why employers don’t want you discussing pay

Two coworkers can do similar jobs and still have no idea one is paid less. Pay secrecy blocks the comparison that could help them bargain together, giving…

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A cheek dimple can come from a variation in a smiling muscle
Health

A cheek dimple can come from a variation in a smiling muscle

An anatomical study linked some dimples to a split in the zygomaticus major, which helps lift the corner of the mouth. An attachment to the skin can pull a…

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Hollywood once made snow from painted cornflakes
Culture & entertainment

Hollywood once made snow from painted cornflakes

The flakes were so loud underfoot that actors had to overdub their dialogue after filming.

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Why Triceratops had those giant horns
Science

Why Triceratops had those giant horns

Triceratops’ horns may have helped defend it, but they could also have advertised strength or helped attract a mate. A giant display can send a message before…

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