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1. Embed this notice
   Paul Cantrell (inthehands@hachyderm.io)'s status on Wednesday, 20-Mar-2024 03:52:44 JST Paul Cantrell

   I recently purchased a CO₂ monitor (an Aranet4, which works nicely and is designed with just shocking good sense and practicality, great device).

   One interesting pattern I notice: CO₂ is consistently lower in campus spaces at Macalester than it is in almost any other indoor space — including even my own house when I’m the only person in it.

   Why? Well…

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   • Embed this notice
     Paul Cantrell (inthehands@hachyderm.io)'s status on Wednesday, 20-Mar-2024 03:57:09 JST Paul Cantrell

     in reply to

     Macalester did a systematic audit of ventilation across campus and made HVAC adjustments across campus to improve filtration, increase ACH, etc etc, in response to the possibility that COVID is airborne…in summer 2020.

     Not 2021. In 2020. Before aerosol transmission was clearly established. Before the WHO and the CDC were even admitting COVID could travel more than 6 feet. Summer of 2020.

     And apparently improved ventilation is still in effect now.

     Don’t tell me better isn’t possible.

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   • Embed this notice
     Paul Cantrell (inthehands@hachyderm.io)'s status on Thursday, 21-Mar-2024 23:54:45 JST Paul Cantrell

     in reply to

     • benjamin melançon

     @mlncn
     I don’t, but it’s an interesting idea!

   • Embed this notice
     benjamin melançon (mlncn@social.coop)'s status on Thursday, 21-Mar-2024 23:54:46 JST benjamin melançon

     in reply to

     @inthehands

     I've noticed at least some parts of the #Minneapolis skyway system and second-floor businesses to be very good (500s) and at least one new Aldi to be shockingly bad (4000s).

     As a way to try to get places to improve, as much as to help people make individual decisions, do you know of any community-sourced mapping-of-CO₂ concentrations out there?

     #COVIDisAirborne