Or, know, we could just crack open the bottom (in the case of the popular double hung, the top) of the window a little bit. But it is-3c (yes, we Americans understand metric) where I am now, so I have no interest in doing that. No Gulf Stream keeping us relatively mild in winter over here.
Listen, you want to brag about health care, public transit, intercity high speed rail, or historic buildings, fine, you got us there. But stop with the air if superiority about everything else.