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Q1343A clay tablet from ancient Mesopotamia preserves a customer's complaint about the quality of goods and the treatment he received — and its humour comes from recognition: gripes about service are not a modern invention. Human frustration can outlast empires.
Q1344Printed in China in 868, the scroll proves that the history of printing does not begin with Gutenberg. Woodblock printing was already sophisticated in East Asia centuries earlier, carrying sacred texts across distance and time.
Q1345Printed in Korea in 1377, Jikji is the oldest surviving book printed with movable metal type. Gutenberg transformed Europe, but metal-type printing has a wider world history, and Korea belongs at the centre of that story.
Q1346This Siberian rift lake is around 25 million years old and holds a huge share of Earth's unfrozen freshwater. It is less a lake than a living geological archive, with species and sediments that preserve deep time.
Q1347Certain Great Basin bristlecone pines are more than 4,800 years old. Their slow growth in cold, dry, harsh mountains helps them survive where easier-living trees would rot or fail. Longevity here is not abundance; it is discipline under pressure.
Q1348The Montreal Protocol restricted chemicals that were destroying ozone. If current controls continue, the ozone layer is on track to recover across much of the world this century. It is rare environmental good news, and it happened because nations acted together.
Q1349HeLa cells became one of the most important human cell lines in research, helping studies of cancer, viruses and vaccines. The story is scientific history and medical ethics at once: progress can be real, and still force us to ask who paid for it.
Q1350Born in 1996 at the Roslin Institute, Dolly showed that a mature cell could be reprogrammed to create an entire animal. That changed how scientists thought about cell identity: a cell's fate was not as fixed as it once seemed.
Q1351When a whale body sinks, it delivers a huge pulse of food to the dark seafloor. Different organisms arrive over time, from scavengers to bone-eating specialists and microbes. This matters because death in nature often becomes infrastructure for other lives. The lesson: endings can feed systems we rarely see.
Q1352USGS reports that B6, a four-month-old bar-tailed godwit, flew 8,425 miles (13,560 km) in 11 days. No food stop, no island rest, no refuel; just one continuous Pacific crossing by a bird still in its first year of life.
Q1353The Irish passage tomb is about 5,000 years old. Around the winter solstice, sunrise enters through a roof-box and lights the inner chamber. It is not only a tomb; it is architecture, ritual and astronomy working as one machine.
Q1354The book was made by scraping and reusing older parchment, including a 10th-century copy of Archimedes. Danish scholar Johan Ludvig Heiberg recognised the hidden text in Constantinople in 1906; after a 1998 auction, imaging work at the Walters helped reveal more. Lost knowledge sometimes survives as a ghost under another book.
Q1355Discovered in 1982 by sponge diver Mehmed Çakır, the Uluburun wreck carried copper, tin, glass, ivory, jewellery and luxury goods from far-flung cultures. One ship shows that global trade has very ancient roots.
Q1356Known from fossils, coelacanths were believed to have vanished long before humans existed. Then a living one was found off South Africa in 1938. The discovery did not stop evolution; it corrected our confidence about what the deep ocean might still be hiding.
Q1357Axolotls can rebuild complex tissues without the same scarring response humans usually have. Researchers study them to understand regeneration, development and repair, not because humans can simply copy the trick tomorrow. This matters globally for medicine and biology. The lesson: healing has possibilities nature has already tested.
Q1358Titan is so cold that methane and ethane behave as liquids on its surface. NASA's Cassini mission showed a world with lakes, seas, clouds and rain — a hydrologic cycle that resembles Earth's, except the liquid is hydrocarbon instead of water.
Q1359NASA says scientists think Europa has a salty ocean under its icy crust, with about twice as much water as Earth's oceans combined. That is why the small Jovian moon is one of the most important places to search for ingredients of life beyond Earth.
Q1360In the ancient Mediterranean, producing Tyrian purple required laborious work with marine snails, which made the dye rare, costly and politically charged. Purple became royal not because it was naturally noble, but because it was brutally difficult to make.
Q1361Fragments from Hohle Fels Cave in Germany include a flute made from bird bone. It suggests early modern humans were not only surviving Ice Age Europe; they were making sound, rhythm and shared culture.
Q1362Built to display Swedish power, Vasa sailed in 1628, heeled over and sank in Stockholm harbour. Raised in 1961, it is now one of the best-preserved 17th-century ships in the world — a failure preserved so completely that it became a museum.
Q1363Quipu were systems of knotted cords used to record countable information such as goods, people and obligations. Colour, position and knot type mattered. It is a reminder that record-keeping does not have to look like ink on a page.
Q1364About 3,600 years old, the bronze disc shows gold symbols interpreted as the sun or full moon, a crescent moon and stars. It matters because it is not just decoration; it is an early attempt to make the sky portable, readable and meaningful.
Q1365At Oklo, natural uranium, water and geology aligned closely enough for fission to occur without human engineering. It is a humbling reminder that some 'modern' technologies imitate processes the Earth discovered first.
Q1367In Jiangyong, China, women used Nüshu for letters, songs, autobiographies and bonds of friendship. Its beauty is not only linguistic; it is a record of private courage under social limits.
