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