Belgian toxicologist Laura Pirard, specialized in marine mammals, shows biopsy slices samples of polar bears adipose tissue, in a laboratory onboard the science icebreaker vessel 'Kronprins Haakon' while sailing in eastern Spitzbergen, in the Svalbard archipelago, on April 9, 2025. The Norwegian Polar Institute, an Arctic research organisation, organised a five-week expedition aboard the high-tech research vessel and icebreaker Kronprins Haakon to collect adipose tissue biopsies and blood samples from polar bears in order to study the impact of pollutants on their health. (Photo by Olivier MORIN / AFP via Getty Images)