In a weird full-circle sort of way, that was (sometimes) the point: it was to allow fresh air to circulate even on very cold days—-and during a pandemic, even.

In a weird full-circle sort of way, that was (sometimes) the point: it was to allow fresh air to circulate even on very cold days—-and during a pandemic, even. https://www.bloomberg.com/news/articles/2020-08-05/the-curious-history-of-steam-heat-and-pandemics https://www.bloomberg.com/news/articles/2020-08-05/the-curio...