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Catamarans feature two parallel hulls for stability
Transport

Catamarans feature two parallel hulls for stability

Two hulls spaced far apart give a catamaran a wide base, so a sideways shove has to fight a long lever arm before tipping it. It stays steady by standing with…

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Whack-a-mole uses aggressive pneumatic cylinders
Games

Whack-a-mole uses aggressive pneumatic cylinders

Pressurized-air cylinders drive the moles up and down, putting the cabinet through a mechanical workout and making regular maintenance necessary.

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A moat appeared in Britain's MPs' expenses scandal
Economy

A moat appeared in Britain's MPs' expenses scandal

Douglas Hogg's submitted household-expense paperwork included the cost of clearing a moat. He disputed having specifically claimed that amount but agreed to…

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Pinterest began as a wedding mood-board machine
Culture & entertainment

Pinterest began as a wedding mood-board machine

Early Pinterest users often treated the site as a wedding mood board, collecting polished inspiration for their big day.

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Cards Against Humanity owns an independent warehouse
Games

Cards Against Humanity owns an independent warehouse

The company runs its own fulfillment center, handling the shipping of its games instead of relying on regular distributors.

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Some French card queens have names of their own
Games

Some French card queens have names of their own

In the traditional Paris pattern, the queens include Pallas, Rachel, Judith, and Argine. These names belong to a particular card tradition rather than every…

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Why the Mothman is seen as a warning
Travel

Why the Mothman is seen as a warning

In Appalachian folklore, sightings of the red-eyed Mothman are treated as omens of disaster, though the creature offers no way to prevent it.

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Macy's once let parade balloons fly away
Culture & entertainment

Macy's once let parade balloons fly away

In the parade's early years, giant balloons were released after the event, with rewards offered to people who found and returned them. They became…

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Jet engine fan blades withstand immense centrifugal force
Transport

Jet engine fan blades withstand immense centrifugal force

A jet fan blade spins so fast that its own mass tries to fling it outward. Strong, carefully shaped blades and a stout hub hold the spinning row together—the…

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The mythical devil said to haunt New Jersey
Travel

The mythical devil said to haunt New Jersey

Legend says an unhappy mother cursed her 13th child, who became a flying, hoofed beast said to screech through New Jersey's woods.

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Why 0.999... equals 1
Science

Why 0.999... equals 1

The repeating threes in 1/3 never stop: 1/3 = 0.333.... Multiply that decimal by 3 and every digit becomes a 9, giving 0.999... = 1. There is no last 9 with a…

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Tephramancy analyzes tree bark ash patterns
Myths & mysteries

Tephramancy analyzes tree bark ash patterns

Tephramancy is a form of divination that interprets ash patterns, sometimes from burned tree bark, as signs or guidance.

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Why some trading cards feel heavier
Games

Why some trading cards feel heavier

Some trading cards use proprietary cardstock that weighs more than standard playing-card stock, adding weight to a deck in your bag.

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Zeno's paradox makes reaching anywhere seem impossible
Science

Zeno's paradox makes reaching anywhere seem impossible

To reach a wall, you could first cover half the distance, then half of what’s left, then half again. Zeno’s puzzle points out that this creates endlessly many…

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Lego bricks grip together via clutch friction
Culture & entertainment

Lego bricks grip together via clutch friction

The tubes under each brick press against the studs below, creating friction that holds the bricks together. The tight fit can make them stubborn to pull…

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Pigeonhole principle proves duplicate items must exist
Science

Pigeonhole principle proves duplicate items must exist

If there are more people than possible hair-count categories, at least two people must share a count. Give each person a category—their number of hairs—and…

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The oven hot enough to bake bread in a minute
Science

The oven hot enough to bake bread in a minute

A tandoor’s clay walls stay hot and radiate heat straight onto the bread, while the bell-shaped oven traps hot air around it. The dough cooks from both sides…

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Japan has a visitor attraction full of free-roaming foxes
Travel

Japan has a visitor attraction full of free-roaming foxes

At Miyagi Zao Fox Village, foxes move around an enclosure rather than staying behind individual display windows. That makes the encounter feel unusually…

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