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> CO2 is also relatively easy to monitor

And yet we inexplicably don't monitor it at all. You can download apps to show you national and local levels of all sorts of pollutants... but not CO2. Outdoor CO2 is tracked at a single point on the Mauna Loa Observatory in Hawaii... and that's pretty much it.

It's bizarre. It's easy to buy an indoor CO2 monitor (I use one to determine when I should open my windows more/less to keep the air inside fresh), but at a local/national monitoring level it simply doesn't exist.




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