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A single sleepless night can raise anxiety levels by as much as 30% the following day, according to neuroscience research — as the brain’s emotional alarm grows louder and one of the regions responsible for keeping it under control becomes less active

Three supermassive black holes have been found packed into a galaxy that existed just 1.2 billion years after the Big Bang — an ancient cosmic pile-up that may explain how the early universe produced such enormous monsters before it had much time to do so

Thirty-nine Hubble-timed globular clusters in the inner 20,000 light-years of the Milky Way revealed a third age-metallicity sequence — proof a 500-million-solar-mass dwarf named LKH was swallowed 11.8 billion years ago, 1.8 billion years before Gaia-Sausage-Enceladus

About 252 million years ago, Siberian volcanoes heated Earth's oceans until much of marine life effectively suffocated — and scientists have now confirmed the same deadly combination of warming and oxygen loss is developing again today.
