[fancifalmanima]

I don't know that the climate impact is necessarily settled: https://www.bbc.com/worklife/article/20200218-why-working-fr...

(note that I'm generally pro wfh, but on the climate side it is feasible that running the AC or heat in your home more during the day is less efficient than driving to work and congregating with bunch of people in a building designed for energy efficiency. I'm not saying that the claim in that article is true, just that I'm not sure that it's settled)

Anecdotally, I ended up getting a CO2 monitor for my house, and had to set the central air fan to run pretty regularly (when not feasible to open windows, which is much of the year year -- quite hot) to circulate the air to keep CO2 levels at a point where they weren't potentially effecting my cognitive abilities (i noticed that's I'd start feeling lethargic and getting headaches, etc). The house is just designed to be sealed up for efficiency, rather than an office building which is often designed to circulate air to avoid that problem. CO2 levels throughout the house have dropped, but there's certainly an energy cost to that.