Actually, it's a really good question, which I don't know the answer to. However, Greenland is called that because it once was, a 'green land', so perhaps it's possible the Arctic wasn't a popsicle at some time in history.
But never fear, I suppose AlGore, who invented sliced bread, the printing press, the Internet, and all prolly (thinks he) knows.
Only marine life, which is rich and abundant today. The Artic Circle has no land mass.