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Hidden underneath the Naryn-Kala fortress in Derbent, Russia, is a mysterious subterranean vault – a buried structure whose original purpose has been unknown for decades. Now, thanks to clever use of scanning technology, we might finally know what the building is. Researchers used a nuclear physics technology known as muon radiography. It works by tracking the charged
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When you think of loud sounds you probably imagine earsplitting screams or whole-body-vibrating booms. Not necessarily the abrupt pop that belongs to a tiny 29-millimetre marine worm (Leocratides kimuraorum). But when marine biologist Ryutaro Goto from Kyoto University and colleagues measured the sounds made by these polychaete worms they came in at a whopping 157
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They’re one of the weirdest, most incongruous-looking natural phenomena you could ever see on Earth’s surface: massive dagger-shaped blades of vertically aligned ice, assembled in mysterious flocks in the middle of the desert. These strange ice spire formations – called ‘penitentes‘ due to their resemblance to penitent, praying folk – take shape at high altitudes