Researchers have captured extremely rare footage of polar bear cubs leaving their snowy dens for the first time. The footage, taken on the Norwegian archipelago Svalbard, shows a mother polar bear ...

Female polar bears give birth in December or early January when the cubs are blind, hairless and weigh just 0.5 kg.

The research team explained that it has been notoriously difficult to study before now as polar bear mothers build their dens under snow in remote areas. For the study, female polar bears were fitted ...