remembering chemistry

My sister-in-law pointed out (to my embarrassment) that in my last post, I made a small mistake. CO2 is, by current word and science standards, referred to as carbon dioxide. (You know, the "2" makes it "di.") No, our fire alarm does not have a CO2 monitor. I am sure our plants wouldn't mind a monitor to make sure they're getting enough CO2 to do their photosynthesis thing, but what I was actually referring to was CO, or carbon monoxide.

Ah, chemistry. I have, yet again, been reminded how one oxygen molecule can make such a difference.