This is one from a couple of years ago when there were lots of cartoons depicting polar bears on floating bits of ice. Maybe editors had had their fill though, as it didn't sell. Or maybe they thought that worrying about global financial crisis at Christmas time is enough, without also worrying about global warming.
To avoid a Frozen Planet controversy, I should point out that this is not a real depiction of polar bears, it's just a drawing.
Click here to buy Penguin vs Polar Bear