Editor's Note: National Geographic went too far in drawing a definitive connection between climate change and a particular starving polar bear in the opening caption of our December 2017 video ...

Warming temperatures may be changing the ways ice forms, making it more likely to stick to and injure polar bears in two far north populations.

Speaking to National Geographic, Ms Mittermeier said : "Although I cannot say with certainty that this bear was starving because of climate change, I do know for sure that polar bears rely on a ...