Standard QR codes hide three larger squares in their corners so scanners can orient them from any angle, while their strongest Reed-Solomon setting can restore roughly 30 per cent of damaged codewords, though not necessarily 30 per cent of the visible squareJuly 24, 2026
Russia still custom-builds the Soyuz return seats for ISS crew members using plaster casts taken weeks before launch, because astronauts grow as much as five centimetres taller during a long-duration stay and a seat moulded to their Earth-shaped spine would no longer fit the body that comes home Saving Tips June 12, 2026 Scott Kelly came back from the International Space Station in March 2016 measurably taller than the brother he had left…
The Roman aqueduct at Segovia, built around the first century AD without mortar, still carried water into the 1970s, its 167 granite arches held together by nothing but the precise weight distribution of stones cut to fit each other within fractions of a millimeter. Saving Tips June 10, 2026 The Aqueduct of Segovia rises out of the Plaza del Azoguejo in central Spain with granite arches stacked in two…
