Polar bear biopsies to shed light on Arctic pollutants

With one foot braced on the helicopter's landing skid, a veterinarian lifted his air rifle, took aim and fired a tranquiliser dart at a polar bear. They even eat grass (seaweed), even though that has no energy for them," Jon Aars, the head of the Svalbard polar bear programme, told AFP. "If they have very little sea ice, they necessarily need to be on land," he said, adding that they spend "much more time on land than they used to... 20 or 30 years ago".

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