You said "some cities", so I presumed you meant outdoors. Of course in a crowded room it can reach 1000 ppm (or much higher) without the proper ventilation. This finding has nothing to do with the city of Shanghai.
And yes, the "window open" comment I made was for a room with 1 person in it like a bedroom. If it's crowded then obviously more effective ventilation will be needed.
> 1000pm is a non-event
Well the study this thread is based on is directly contradicting that. Do you know of any studies that shows that 1000 ppm has no negative impact on higher order cognition?
> Maybe we'll just have to get some more indoor plants.
Indoor plants aren't effective at reducing indoor CO2.
You said "some cities", so I presumed you meant outdoors. Of course in a crowded room it can reach 1000 ppm (or much higher) without the proper ventilation. This finding has nothing to do with the city of Shanghai.
And yes, the "window open" comment I made was for a room with 1 person in it like a bedroom. If it's crowded then obviously more effective ventilation will be needed.
> 1000pm is a non-event
Well the study this thread is based on is directly contradicting that. Do you know of any studies that shows that 1000 ppm has no negative impact on higher order cognition?
> Maybe we'll just have to get some more indoor plants.
Indoor plants aren't effective at reducing indoor CO2.