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Using a novel dome-shaped structural design, researchers in Science present a chemically diverse collection of aerogels that remain elastic and mechanically intact under extreme temperatures. The findings open the door for the fabrication of new aerogel materials suited to extreme environments.

28,456 次观看 • 10 个月前 •via X (Twitter)

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There is a keyhole in Rome that lets you see three countries at once... It sits in a green door at the top of the Aventine Hill. Press one eye to the lock, and the dome of St Peter's Basilica appears at the end of a long corridor of laurel hedges, framed perfectly inside a circle of metal barely an inch wide. The dome is a kilometer and a half away, but through the keyhole it looks impossibly close. As if you could reach through and touch it. The door belongs to the Sovereign Military Order of Malta, the only order from the Crusades that still exercises sovereignty today. The villa behind the door has extraterritorial status and it's treated as separate from the surrounding Italian territory. This is why one keyhole holds three sovereign jurisdictions. The garden in front of you is the territory of the Order of Malta — not a country in the conventional sense, but a sovereign subject of international law, with its own passports, ambassadors, and a permanent observer seat at the United Nations. The land between the garden and the dome is Italy. The dome itself stands inside the Vatican. Three sovereignties in one glance... None of this was an accident. In 1765, the Venetian architect Giovanni Battista Piranesi was commissioned to redesign the priory. He laid out the gardens, planted the laurels, and aligned everything toward the distant dome of Michelangelo's masterpiece. He was building a telescope made of trees. When he died in 1778, he was buried inside the church behind the door, a few steps from the keyhole that became his most famous design...

James Lucas

244,476 次观看 • 1 个月前