Between snowy winters and holiday songs, many animals come to mind during Christmas. There are polar bears wearing Santa hats ...

As climate change warms the glaciers and ice caps around the world ... "Pathogenic viruses that can infect humans or animals might be preserved in old permafrost layers, including some that ...

But as the ice disappears in a warming world, many bears are spending greater amounts of time on shore, eating bird's eggs, berries and grass. However the animals rapidly lose weight on land ...