University of Copenhagen is Denmark's oldest and largest university, with broad research across sciences, humanities, and medicine.
Copenhagen PhD candidate Mario Rodríguez Mestre questions whether Anthropic's Claude independently found an enzyme family his team has studied since 2022. Credit for the find is unsettled, and the case shows how little a scientist can check once unpublished work has gone into a commercial chatbot.
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University of Copenhagen economists put Denmark's revenue loss from cross-border shopping at DKK 415 million, against the tax ministry's DKK 1.16 billion. Their evidence, from the 2020-21 COVID border closures, places most of that leakage within a short drive of Germany.
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Linguists at Aarhus and Copenhagen measured Madonna's interviews from the 1980s to 2021 and found her speaking pitch generally higher since the late 1990s. They argue she did it on purpose, a claim about motive that one speaker's public recordings can support but not settle.
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University of Copenhagen researchers report in Science that cold raised the mitochondrial carrier SLC25A34 90-fold in mouse brown fat after 24 hours. Because the body clock and dietary fat also control it, the lead author sees a possible new obesity-drug lever in work done so far in mice.
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Lund University researchers trace the aurochs' Scandinavian extinction to overlapping pressures, with the last Swedish animals alive at least 6,500 years ago. The lead author draws a case for wildlife corridors from the order in which those pressures arrived.
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University of Copenhagen researchers estimate at least 75% of Earth's mass came via pebble accretion and about three-quarters of Mars' from planetesimals. On this evidence, rocky neighbours can grow by different routes, though the models have to assume what the building blocks were made of.
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Christophe Helmke's team at the University of Copenhagen reads three red glyphs in Chalcatzingo's Cave 19 as Teotihuacan writing tied to warrior fire rites. The readings add a site beyond the city to the case for a Teotihuacan script, while the fire-ritual claim rests on soot above one rock shelf.
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University of Copenhagen researchers found blood signs of gut bacteria fermenting more protein in 52 ISS astronauts within weeks of reaching orbit. The team suspects slower digestion and says Mars crews may need countermeasures, though blood chemistry alone cannot confirm the cause.
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Colliding oxygen-16 and neon-20 produced quark-gluon plasma, and the outgoing particles carried the shape of the incoming nuclei. Light-ion runs now buy two results at once.
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Niels Bohr Institute astrophysicists ran 195 collapsing-star models and found neutrino flavor conversion flips the outcome for stars of 16 to 30 solar masses. The density at which conversion begins is still an input, so the effect on supernova counts is unmeasured.
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A Copenhagen-led team reports in Nature a faint trail of tidally stripped stars inside the ultra-diffuse galaxy UGC9050-Dw1, where the mass it implies agrees with earlier estimates for the same galaxy.
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A Trends in Microbiology opinion piece from DTU and Copenhagen argues that temperature, oxygen and pH decide whether a resistance gene makes a bacterium resistant, while the standard laboratory test holds all three fixed and returns one binary answer.
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The annual Planetary Health Check counts seven of nine boundaries transgressed, ocean acidification among them since 2025, and puts carbon dioxide at 426 parts per million against 280 before industrialisation. More than 60 scientists signed it.
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DTU's mAxialtrode packs a light-guiding core and eight liquid channels into a fiber thinner than half a millimetre. It worked in mice, and its developers say routine clinical use needs much more testing and regulatory approval.
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A University of Copenhagen team paired rare-variant data from several thousand heart-defect patients with engineered zebrafish and cell experiments. The brain, kidney and skeletal effects in its summary are predictions.
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An international team sequenced Yersinia pestis from teeth at four Siberian cemeteries and found it in 18 of 46 people, among them siblings and parents who appear to have died in the same outbreak. The work is published in Nature.
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Six researchers spent nearly a decade building a third computer proof of the four-color theorem, one that runs longer than the proofs that came before it. Their return was a much faster coloring method plus new structure in planar graphs.
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Six whales carrying temperature and salinity tags returned profiles from basins where research ships turn back, roughly matching everything previously archived for Scoresby Sound and giving melt models a measured input where they had estimates.
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A University of Copenhagen study found 42% of workplaces resistant to greener lunches, and the sites already serving the lowest-footprint food were the ones whose staff ate less meat anyway.
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Three bioethicists writing in Nature say sleep enhancement could make rest an auditable obligation. A Dutch regulator already found that employees cannot freely consent to sleep tracking.
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