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Massive Brazilian dam fully shifted a massive river
History

Massive Brazilian dam fully shifted a massive river

Engineers cut a channel through solid rock and diverted the Paraná River through it, clearing the site for Itaipu Dam. Instead of building against the river,…

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Why pinochle decks start at nine
Games

Why pinochle decks start at nine

A pinochle deck omits cards below nine and doubles the higher ranks, giving players two copies of each high card.

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The first Atlas honored a legendary scholar-king
Science

The first Atlas honored a legendary scholar-king

Mercator chose the title for his 1595 work in honor of Atlas, a legendary king of Mauretania associated with astronomy and learning. His title page shows a…

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Kafka's friend disobeyed him—and saved his unpublished novels
Culture & entertainment

Kafka's friend disobeyed him—and saved his unpublished novels

Kafka asked his friend Max Brod to destroy his unpublished manuscripts unread, but Brod published them after Kafka's death, helping make him one of the 20th…

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Stevia leaves require heavy processing for bitterness
Economy

Stevia leaves require heavy processing for bitterness

The sweetener starts with leaves that taste bitter and strongly of licorice. To get the familiar sweet white powder, producers have to extract and process the…

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Ectoplasm manifests as a deeply uncomfortable ghost goo
Myths & mysteries

Ectoplasm manifests as a deeply uncomfortable ghost goo

In spiritualist lore, ectoplasm is a supposedly physical substance that lets spirits interact with the living world.

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Disembodied voices whisper directly into your left ear
Myths & mysteries

Disembodied voices whisper directly into your left ear

One unsettling version is hearing your own name spoken aloud when no one is there, often while you're alone.

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Flat Stanley began with a bedtime what-if
Culture & entertainment

Flat Stanley began with a bedtime what-if

Jeff Brown's son wondered what would happen if the bulletin board above his bed fell on him. Brown turned that question into a boy who survives being…

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Hacky Sack is actually called footbag
Games

Hacky Sack is actually called footbag

The woven-bag game is generically called footbag; Hacky Sack is a brand name.

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The sport where swimming strokes are banned
Games

The sport where swimming strokes are banned

In bog snorkeling, competitors race through a cold, muddy peat trench wearing flippers and snorkels; conventional swimming strokes are banned.

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Royal litters featured entirely enclosed beds
Transport

Royal litters featured entirely enclosed beds

A closed litter gave its passenger privacy and shelter while bearers carried it through crowded streets. Inside, the royal traveler could recline on a bed;…

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Putrajaya's roundabout is 3.5 kilometers around
History

Putrajaya's roundabout is 3.5 kilometers around

Miss your exit and there’s no quick reset: you have to circle the full 3.5 kilometers before trying again. One bad lane choice becomes a very long scenic tour.

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A typo gave Coraline its name
Culture & entertainment

A typo gave Coraline its name

Neil Gaiman meant to type “Caroline” but accidentally typed “Coraline.” He liked the typo’s strange sound and built a dark fantasy novella around it.

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National Geographic’s first issue had no photographs
Culture & entertainment

National Geographic’s first issue had no photographs

The magazine launched in 1888 with a scholarly-looking collection of reports and articles. The vivid photography now associated with its identity came later.…

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How monks crossed rivers on a single log
Transport

How monks crossed rivers on a single log

They balanced upright on a single floating log and used a smaller stick to paddle across streams.

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How uterine fibroids can grow to enormous sizes
Health

How uterine fibroids can grow to enormous sizes

Sometimes uterine muscle cells multiply into dense, rubbery growths called fibroids, though why this happens remains unclear. If a growth becomes large, it…

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Why crooked picture frames bother you so much
Psychology

Why crooked picture frames bother you so much

A tilted picture frame gives your eyes a small unfinished problem: the wall says “level,” and the frame says “almost.” That mismatch stands out more than the…

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Giant tortoises helped change Darwin's view after the voyage
Transport

Giant tortoises helped change Darwin's view after the voyage

Darwin did not immediately recognize the full significance of differences between Galápagos tortoises. Back in England, comparisons with other island animals…

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