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Svalbard polar bears are getting fatter despite ice loss, adapting their diet to include walruses and reindeer in a surprising display of climate resilience.

In a finding that has stunned climate scientists, polar bears on the Norwegian archipelago of Svalbard are fatter and healthier than they were 30 years ago, defying the catastrophic loss of their sea-ice habitat.
The study, led by the Norwegian Polar Institute, challenges the linear narrative of climate extinction. Despite the region losing an average of four ice-free days per year—essentially shrinking the bears' hunting season by months over decades—the bears have adapted with remarkable resilience. The key appears to be a dietary revolution: the bears have swapped seals for reindeer and walruses.
"The fatter a bear is, the better it is," explained Dr. Jon Aars, lead researcher. "We expected a decline. Instead, we are seeing adaptation." Data collected from 770 bears between 1992 and 2019 reveals that body condition scores have actually improved. This suggests that the King of the Arctic is not a passive victim of climate change but an intelligent opportunist.
The recovery of the walrus population, protected since the 1950s, has provided a calorie-dense alternative buffet. Furthermore, bears have been observed hunting reindeer on land, a behavior previously thought to be energetic suicide but now proven viable.
The findings, published in Scientific Reports, add a layer of nuance to the climate debate. It is not a license to ignore emissions, but a testament to the resilience of life.
For now, on the rocky shores of Svalbard, the polar bear is winning its battle against the thermometer. But as the Arctic continues to warm at four times the global average, the question remains: How long can they keep improvising?
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