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

The two most affected bears couldn't run – they couldn't even walk very easily,' said Professor Laidre. 'The chunks of ice weren't just caught up in the hair – they were sealed to the skin ...

Polar bears are the planet’s biggest land-based carnivores – although they actually spend most of their lives around water and ice (their Latin name means ‘sea bear’). So they’re at particular risk ...