Art, science, history, surprise

Wonder

The world is stranger up close.

Facts, artworks and discoveries that reward a second look and open a door into something larger.

1,289 cardsPage 30 of 54Context and sources

Editor’s note

The open room

Wonder begins where familiarity loosens. This edition crosses science, art, language and history to recover the useful shock of looking closely at things we thought we already knew.

Q1313
WonderHistory

During WWII, a bear named Wojtek was officially enlisted in the Polish army and carried artillery shells into battle.

Adopted as a cub by Polish soldiers in Iran in 1942, Wojtek grew into a 200-kilogram brown bear. To bring him aboard a British transport ship, the men formally enlisted him — with a name, rank and serial number — in the 22nd Artillery Supply Company. At the Battle of Monte Cassino in 1944 he carried crates of shells to the guns, reportedly never dropping one. He spent his last years in Edinburgh Zoo.

Q1314
WonderScience

There are more trees on Earth than there are stars in the Milky Way.

A landmark 2015 study combining hundreds of thousands of ground surveys with satellite data put Earth's tree count at about 3 trillion. Our galaxy holds an estimated 100 to 400 billion stars — so trees outnumber them several times over. The same study carried a sting: humans have roughly halved the world's trees since farming began.

Q1315
WonderScience

The horseshoe crab has blue blood so sensitive to contamination that it is used to keep vaccines safe.

Horseshoe crab blood is blue because it carries oxygen with copper rather than iron. It also contains cells that clot instantly around bacterial toxins — so reliably that, since the 1970s, an extract called LAL has been the standard test ensuring vaccines, IV drugs and implants are free of contamination. Nearly every injectable medicine has, in effect, been checked by a creature older than the dinosaurs.

Q1316
WonderScience

Marie Curie's notebooks are still so radioactive that they are kept in lead-lined boxes.

Curie handled radium with bare hands and carried glowing test tubes in her pockets, unaware of the danger. More than a century on, her laboratory notebooks — held at the Bibliothèque Nationale in Paris — remain contaminated with radium-226, whose half-life is 1,600 years. They are stored in lead-lined boxes, and researchers must sign a waiver and wear protection to view them. They will stay hazardous for another 1,500 years.

Q1317
WonderScience

Gallium is a metal that melts in your hand — its melting point sits just below body temperature.

Solid at room temperature, gallium turns to liquid at about 30°C (86°F), so a small piece held in a warm palm slowly puddles into a silvery pool. It is harmless to touch, which makes it a favourite for science demonstrations — a spoon cast from gallium will 'disappear' when used to stir a hot drink. It's a vivid reminder of how arbitrary the line between solid and liquid can be.

Q1318
WonderLanguage

Ancient languages named black, white and red first — blue came last, and Homer never once used it.

In the 1850s the future British PM William Gladstone noticed that Homer describes a 'wine-dark sea' and honey-coloured skies, but nothing as blue. Later research by Berlin and Kay found the same pattern worldwide: languages acquire colour words in a strikingly consistent order, with blue arriving late — probably because blue is rare in nature and hard to make as a dye. The Greeks could see blue; they simply had no everyday word to fence it off.

Q1319
WonderScience

The largest desert on Earth is Antarctica.

A desert is defined by how little precipitation it receives, not by heat or sand. By that measure Antarctica — about 14 million square kilometres (5.4 million sq mi) where almost no rain or snow falls in the dry interior — is the biggest desert on the planet, larger than the Sahara. Parts of its 'Dry Valleys' may not have seen rainfall in millions of years.

Q1320
WonderScience

In Utah, a forest of about 47,000 aspen trunks is actually a single organism sharing one root system.

Named Pando ('I spread' in Latin), this grove of quaking aspens looks like thousands of separate trees, but every trunk is a genetically identical clone growing from one vast underground root network. Weighing an estimated 6,000 tonnes (6,600 short tons), it is among the heaviest known living things — and possibly one of the oldest, with estimates running to thousands of years. It is, in a real sense, a single life pretending to be a forest.

Q1322
WonderScience

The point on Earth's surface closest to outer space is not Everest, but Mount Chimborazo in Ecuador.

Everest is the highest above sea level, but Earth is not a perfect sphere — it bulges at the equator. Chimborazo sits almost on that bulge, one degree south of the equator, so although its summit is over 2,500 metres (8,200 feet) lower than Everest's by sea level, it stands about 2 kilometres (1.2 miles) farther from the planet's centre. Measured from the middle of the Earth, its peak is the closest solid ground to space.

Q1323
WonderScience

The Sahara was green grassland dotted with lakes as recently as 6,000 years ago.

For thousands of years during the 'African Humid Period', a wobble in Earth's orbit shifted the monsoon north and turned today's largest hot desert into savanna. Rock art there shows people herding cattle, and swimming, beside lakes and rivers now buried under sand. The greening ended only a few thousand years ago as the climate slowly dried — a reminder that even deserts are chapters, not permanent states.

Q1324
WonderScience

Wombats are the only known animals that produce cube-shaped droppings.

These burrowing Australian marsupials leave behind little cubes — up to a hundred a night — and scientists spent years puzzling over how. A 2019 study found the answer in the wombat's long intestine, whose walls stretch unevenly, moulding soft waste into flat-sided blocks before it dries. The likely purpose is practical: cubes don't roll away, so a wombat can stack them to mark its territory.

Q1325
WonderScience

Flamingos are not born pink — they turn pink from what they eat.

Flamingo chicks hatch grey. Their famous colour comes from pigments called carotenoids in the algae and small shellfish they filter from the water — the same family of compounds that makes carrots orange. A flamingo's diet quite literally shows on its feathers, and a captive bird fed the wrong food will slowly fade to white. You are, in the plainest sense, coloured by what you consume.

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