Is this why in some classrooms I felt inexplicably sleepy?  I wonder how hard it is to get a CO2 measurement. One of my kids mentioned being very tired in certain classes, too. 
Rachel

-----Original Message-----
From: Emily Russell <linninniach@gmail.com>
To: Laura Dickerson <lauradi@rcn.com>
Cc: Boston Change Ringers <boston-change-ringers@cosmos.phy.tufts.edu>
Sent: Tue, Dec 14, 2021 3:03 pm
Subject: Re: Ventilation

I was curious what they mean by "well" or "poorly" ventilated, so clicking
through to the study...

"In 60 percent of the classrooms, CO2 levels exceeded 2000 parts per
million (ppm). Elevated CO2 concentrations can impair cognitive performance
and thus learning ability."

"In high-risk schools, it often exceeded 3,000 parts per million (ppm) – a
level significantly higher than the recommended level of no more than 1,000
ppm."

Emily



On Mon, Dec 13, 2021 at 9:30 AM <lauradi@rcn.com> wrote:

> A Boston ringing room isn't necessarily the same as a Swiss classroom, and
> I know we're on Team Ventilation already, but I thought this was
> interesting.
>
> [
> https://www.swissinfo.ch/eng/society/study-shows-benefit-of-regular-classroom-ventilation/47179498
> |
> https://www.swissinfo.ch/eng/society/study-shows-benefit-of-regular-classroom-ventilation/47179498
> ]
>
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://cosmos.phy.tufts.edu/mhonarc/boston-change-ringers/attachments/20211213/6a4c8f63/attachment.htm
> >
> _______________________________________________
> Boston-change-ringers mailing list
> Boston-change-ringers@cosmos.phy.tufts.edu
> https://cosmos.phy.tufts.edu/mailman/listinfo/boston-change-ringers
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://cosmos.phy.tufts.edu/mhonarc/boston-change-ringers/attachments/20211214/3f257375/attachment.htm>
_______________________________________________
Boston-change-ringers mailing list
Boston-change-ringers@cosmos.phy.tufts.edu
https://cosmos.phy.tufts.edu/mailman/listinfo/boston-change-ringers
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://cosmos.phy.tufts.edu/mhonarc/boston-change-ringers/attachments/20211214/27d3d7d7/attachment.htm>