[Sudetenland]

I used to grind my teeth every time I saw that ad for natural gas or coal (I can't remember which) in which they called CO2 an "impurity."

Man, talk about pandering to the left and dumbing down the nation at the same time.

[Nepeta]

I used to grind my teeth every time I saw that ad for natural gas or coal (I can't remember which) in which they called CO2 an "impurity."

Man, talk about pandering to the left and dumbing down the nation at the same time.

If you are describing what levels of non-fuel components are present in natural gas, describing carbon dioxide as an impurity makes good technical sense. "Impurity" need not mean bad, evil, or destructive--it simply is.