"A polar bear who lives in Canada in the Arctic needs help. Temperatures at his home aren't as cold as they used to be, and the ice is melting. When it's cold, polar bears walk across the ice to find seals. They can walk for a long time but can't swim as far. If the sea ice disappears, they won't be able to hunt for food, putting the already endangered bears further in jeopardy"-- from publisher.