Is global warming behind America’s snowstorms?

Is there any weather condition which cannot be blamed on anthropogenic global warming (AGW)? No, it seems, judging by the reaction in the US liberal press to the snowstorm which has engulfed much of the US over the past few days. According to Bloomberg it is all down to a loopier-than-normal jet stream, “the kind of event that could become more common as climate change accelerates”. A similar claim was made by Eric Mack, a correspondent on Forbes, who wrote this week that the poles are warming disproportionately and that, “studies [he didn’t say which ones] have shown that all this unusual and rapid warming in the north affects the jet stream in new and sometimes weird ways”. This