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
In 2026, scientists assembled the Greenland shark’s 5.9-billion-letter genome and examined retinas from animals more than a century old, finding intact vision, expanded DNA-repair pathways and unusual chromatin machinery inside a vertebrate believed capable of surviving for nearly four centuries Saving Tips July 24, 2026 A Greenland shark can spend more than a century swimming through water cold enough to numb exposed human skin, yet…
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…
In 1901, sponge divers off the Greek island of Antikythera pulled a corroded lump of bronze out of a Roman shipwreck, and it sat in an Athens museum for half a century before anyone realised they had found a 2,000-year-old computer that could predict eclipses 19 years in advance. Saving Tips June 1, 2026 In the spring of 1900, a crew of Symi sponge divers en route to fishing grounds off North Africa were…
