JAY, Vt. – The Northeast has been seized by extreme cold for more than a week now, with wind chill readings so low that even hardy Vermonters are thinking twice about going outside. “It will take a special attitude to be out there today,” said Bill Stenger, general manager of the Jay Peak ski area, where the afternoon temperature was 14 below zero.Arctic air has been blowing through the Northeast for the past week, creating wind chills as low as minus 60. The last time the mercury in New York City rose above freezing was Jan. 13 – eight icy...