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Seiko made a smartwatch in 1998
Technology

Seiko made a smartwatch in 1998

The Ruputer had a 16-bit processor, 128 KB of RAM, and a tiny joystick for navigating menus. It synced with a PC through a docking station.

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Why a dollar is called a buck
Economy

Why a dollar is called a buck

A buck may have started as a buckskin: colonists used animal hides in trade, with a male deer’s hide serving as a measure of value. The old trading term may…

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Yod formations are called the finger of God and point directly toward your inescapable life burden
Myths & mysteries

Yod formations are called the finger of God and point directly toward your inescapable life burden

In astrology, two planets form supportive aspects to each other while both connect sharply to a third, creating a Y-shaped pattern. Astrologers call the…

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Banknotes use ink that shifts from green to copper when viewed from different angles
Economy

Banknotes use ink that shifts from green to copper when viewed from different angles

The ink contains tiny reflective flakes. Turn the note, and the angle changes which color they reflect: green from one view, copper from another.

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Why the International Date Line zigzags
Travel

Why the International Date Line zigzags

It bends around Pacific island nations to keep a single country from being split between two calendar days.

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The Grand Canyon is missing hundreds of millions of years
Travel

The Grand Canyon is missing hundreds of millions of years

Erosion removed older rock before newer sediment could settle, leaving a gap in the canyon's geological record known as the Great Unconformity.

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Turntable tonearms use rear counterweights so the stylus presses with only a few grams
Culture & entertainment

Turntable tonearms use rear counterweights so the stylus presses with only a few grams

The rear counterweight balances the arm so the stylus presses down with only a few grams as it tracks the groove.

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Whaling ships spent years at sea
History

Whaling ships spent years at sea

A whaling voyage could last up to four years as crews boiled blubber into lamp oil at sea. The lamps back home ran on fuel made by a factory that could…

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Snowboard boots are flexible enough to walk in, unlike stiff alpine ski boots
Transport

Snowboard boots are flexible enough to walk in, unlike stiff alpine ski boots

Soft snowboard boots bend at the ankle, making walking easier and letting riders move their weight over the board. Ski boots lock the ankle more firmly to…

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Your eyebrows are tiny sweat gutters
Health

Your eyebrows are tiny sweat gutters

Forehead sweat runs toward your eyes unless something redirects it. Your eyebrows' curved shape and angled hairs catch some of that moisture and channel it…

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The first mechanical clocks had just one hand
History

The first mechanical clocks had just one hand

Early clocks marked hours, not minutes, so telling 2:20 meant estimating the space between hour marks. The clock gave you the hour; the rest was up to your eye.

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Multiplier effects turn one spent dollar into multiple
Economy

Multiplier effects turn one spent dollar into multiple

Pay a mechanic, and that money may buy the mechanic dinner; the restaurant may then use its earnings to buy boots. One dollar keeps prompting purchases as it…

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Why airplane black boxes are actually orange
Travel

Why airplane black boxes are actually orange

They’re painted high-visibility orange and covered in reflective tape so search crews can spot them in wreckage or underwater.

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Toy Story hid The Shining's carpet in Sid's house
Culture & entertainment

Toy Story hid The Shining's carpet in Sid's house

The hexagonal carpet pattern from the Overlook Hotel appears on the floor of Sid’s house, a visual nod to the horror film.

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Cyberpunk 2077 launched with melting faces
Culture & entertainment

Cyberpunk 2077 launched with melting faces

At launch, some characters' faces glitched into polygonal distortions, with floating eyeballs and unrendered teeth.

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A sneeze can send droplets 30 feet
Health

A sneeze can send droplets 30 feet

The force of a sneeze sends air and droplets outward, and smaller droplets can travel a surprisingly long way—up to 30 feet. A hand or tissue in front of your…

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Your brain can judge a librarian who plays chess likelier than a librarian
Psychology

Your brain can judge a librarian who plays chess likelier than a librarian

Your mind often judges a person by resemblance to a mental picture, not by counting possibilities. A chess-playing librarian may feel like a more convincing…

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Opposable thumbs are an exceptionally rare anatomical trait
Health

Opposable thumbs are an exceptionally rare anatomical trait

An opposable thumb can move across the palm to meet the fingertips. That lets you pinch and adjust small objects with more control than a grip that can only…

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