Polar vortex linked to melting sea ice

CBS News-Katharine Hayhoe, a Texas Tech climate scientist in Lubbock, said the study 'provides important insight into the cascading nature of the effects human activities are having on the planet.'

Remember the polar vortex, the huge mass of Arctic air that can plunge much of the U.S. into the deep freeze? You might have to get used to it.

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Katharine Hayhoe, a Texas Tech climate scientist in Lubbock, said the study "provides important insight into the cascading nature of the effects human activities are having on the planet."

Read the rest of the story at CBS News