Studying polar bears just became a lot easier with new “burr on fur” trackers which confirmed scientists’ belief that subadult and adult males spend most of their time on land lazing around, conserving energy until the ice returns. Studying polar bears just became a lot easier with new “burr on fur” trackers which confirmed scientists’ belief that subadult and adult males spend most of their time on land lazing around, conserving energy until the ice returns. Ecology Biotechnology Phys.org – latest science and technology news stories