Polar bears face higher risk of disease in a warming Arctic

USGSIn a warming Arctic, polar bears are spending more of their time on landAs the Arctic warms, polar bears face a growing risk of contracting viruses, bacteria and parasites that they were less likely to encounter just 30 years ago, research has revealed.In a study that has provided clues about how polar bear disease could be linked to ice loss, scientists examined blood samples from bears in the Chukchi Sea -…