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The mass deaths were puzzling scientists around the world – there were no signs of viruses or parasites. Then we looked closely at their skin
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This bizarre sea creature could have negative effects on animals on the marine food web, scientists say
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Fossil of giant river dolphin found in Peru, whose closest living relation is in South Asia, gives clues to future extinction threats
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Researchers are running trials on how hormone therapies affect trans people that will also benefit healthcare for the wider population
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Researchers at Nottingham Trent University hope device used at home will improve tracking of tumours
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Some believe global anomalies are in line with predictions but others are more concerned by speed of change
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Discovery was made after First Nations tipped off ecologists about groups of fish gathering in a fjord off British Columbia
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H5N1 is most likely to have been introduced in the region through birds migrating from South America
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The two species of pygmy squid the size of a fingernail live on Japanese coral reefs. Spotting them is a sign of a healthy ecosystem, say scientists
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scientists and vets are urging the president to afford the worldâs most traded species better protections
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Procedure could overcome common forms of infertility and help people have children who share their DNA