Phronesis
Today · Tuesday, 13 October 2026131 ideas in the archive
Idea of the dayNo. 007CountriesPlace

Kazakhstan brought half of a dying sea back to life

The Aral Sea was once the world’s fourth-largest lake. Soviet irrigation drained it into a desert, but a dam built by Kazakhstan in 2005 revived its northern part, and the fish came back.

From the 1960s, Soviet planners diverted the Amu Darya and Syr Darya rivers to grow cotton and other crops, and the Aral Sea shrank catastrophically. By 2014 its eastern basin had dried out completely, leaving the Aralkum desert. But in 2005 Kazakhstan completed the Kokaral dam, separating the North Aral. Its water level rose, salinity fell, and commercial fishing returned.

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The deckSwipe through 131 ideasRight to keep, left to skip. Made for a few spare minutes.

Ways to discover

  1. I.Learn in 5 minutesA whole idea, start to finish, over a coffee.51
  2. II.Useful to knowKnowledge that quietly makes life easier.51
  3. III.Strange but trueThings that sound made up, and aren't.32
  4. IV.The story behind…Origins of things you see every day.66
  5. V.Hidden connectionsWhere unrelated things turn out to meet.70
  6. VI.Things you didn't knowSmall surprises with big afterlives.87
  7. VII.Conversation startersReady to bring up at dinner.126
  8. VIII.Deep diveFor when one layer isn't enough.18

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Trail7 steps

China, close up

Pandas, an ancient capital, its Muslim quarter, a noodle you can barely write, and an army in the ground.

  1. 1China owns nearly every giant panda on Earth
  2. 2How a meat-eater’s body survives on bamboo
  3. 3Pandas are almost absent from classical Chinese art
  4. 4Xi’an was once one of the largest cities on Earth
  5. 5Who lives in Xi’an’s Muslim Quarter
  6. 6A noodle dish whose name has 58 strokes
  7. 7The Terracotta Army was found by farmers digging a well
Trail5 steps

Eating China (and its travels)

A spice that vibrates, a dish its hometown rejected, and two words for one drink.

  1. 1Sichuan pepper makes your lips buzz at 50 Hz
  2. 2A noodle dish whose name has 58 strokes
  3. 3General Tso’s chicken is unknown in General Tso’s home province
  4. 4Fortune cookies are Japanese, by way of California
  5. 5Tea if by sea, chai if by land
Trail7 steps

Faith, festivals and calendars

Why Christmas is when it is, why Ramadan moves, and other things worth knowing about how religions shape time and daily life.

  1. 1Why Christmas is on 25 December
  2. 2Jesus was probably born “Before Christ”
  3. 3Why Ramadan moves about 11 days earlier every year
  4. 4The temple kitchen that feeds tens of thousands every day, free
  5. 5One of the oldest faiths, and Freddie Mercury’s
  6. 6The “Laughing Buddha” isn’t the Buddha
  7. 7Born Shinto, married Christian, buried Buddhist

Strange but true

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Biang Biang Mian closeup
No. 013DishCuisine & Food

A noodle dish whose name has 58 strokes

Xi’an’s wide, hand-pulled biangbiang noodles are written with one of the most complex Chinese characters in use. It wasn’t in any dictionary, and only entered Unicode in 2020.

2 min▶ AnimationUnicode 2020
плазмодій слизовика виду Physarum polycephalum
No. 111StoryNature

A slime mould designed the Tokyo rail network

Scientists put oat flakes where Tokyo’s cities are. A brainless single-celled organism grew a network remarkably like the real railway.

2 min▶ Video2010
No. 079StoryFashion & Trends

An 18-year-old’s failed medicine set off a fashion craze

In 1856 a student trying to make a malaria drug produced a purple stain instead, and within two years Europe was wearing mauve.

2 min1856–1858
Gomero pfeift El Silbo
No. 109Word originLanguage

An island where people speak Spanish by whistling

On La Gomera in the Canary Islands, Spanish is whistled across ravines, and every schoolchild learns how.

2 minsince the 16th century
No. 010Word originLanguage

Basque is related to no other language on Earth

Spanish, French, English, Russian and Hindi are all distant cousins. Basque, spoken between Spain and France, is no one’s cousin at all.

2 min▶ Animation
No. 018Word originLanguage

Buffalo buffalo Buffalo buffalo…

“Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo” is a grammatically correct English sentence.

1 min1972

Bring these up tonight

“‘An eye for an eye’ was originally meant to limit punishment, not to encourage revenge.”
From No. 054 · “An eye for an eye” was a step forward
“Turing’s famous 1950 paper on thinking machines replies directly to Ada Lovelace, who had died almost a century earlier.”
From No. 123 · “Can machines think?”: Turing’s 1950 question
“Films used to avoid showing people singing ‘Happy Birthday’ because it cost money in licensing fees, until 2015.”
From No. 056 · “Happy Birthday” was copyrighted until 2015

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