"Global warming" is a bad misnomer. But believe it or not, it's causing this. Heat pumped into the air causes it to expand and move...it moved north to the pole, it is melting.

People are running around in T-shorts at the Olympics...the cold air has to move when it's displaced by warm air...guess where it went?

"climate change" is a way better term. What is happening is the world's weather patterns are being disturbed. Not to mention it's inhabitants.