Climate scientist proposes extremely cold 2014 winter link to

() —Tim Palmer, a climate scientist and professor at the University of Oxford in the U.K. has published a somewhat controversial Perspective piece in the journal Science. In it, he theorizes that heavy thunderstorms in the western tropical Pacific (due to global warming) this past winter caused changes to the flow pattern of the jet stream, which resulted in the "polar vortex" that chilled the northern part of North America for the first four months of 2014.

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