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Polar Bears Show DNA Changes Due to Climate Crisis

12/12/2025

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Story summary
  • Researchers at the University of East Anglia identified significant DNA changes in polar bears that may link rising temperatures to genetic changes in a wild mammal.
  • The study shows these changes occur in polar bears in south-east Greenland, involving genes related to heat stress and metabolism.
  • The findings have conservation implications that urge action to reduce fossil fuel emissions.