scientific explanation

“Well, the wacky weather could get even wackier. What we’re seeing is that the jet stream and the polar vortex are becoming unstable. Instability of historic proportions. Now think of the polar vortex as a bucket, a swirling bucket of cold air. However, the walls are weakening.”

“Cold air is spilling out, spilling out over the walls of the bucket. And the question is, why? Why is this polar vortex weakening? We think it’s because of the gradual heating up of the North Pole. The North Pole is melting.”
New York City College physics professor Michio Kaku, interview on CBS, This Morning, 13 Feb 2014