Jophiel wrote:
gbaji wrote:
CO2 is *not* a pollutant.
Says you. The EPA says otherwise.
Yeah. That's the problem. By their definition of "pollutant", water is a pollutant as well. In fact, *everything* is a pollutant that can be present in high enough quantities to cause harm. Um... That's just about every substance on the face of the planet.
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As I recall, your brilliant argument last time was that CO2 can't possibly be classified as a pollutant because it occurs in the air naturally. It was pointed out that CO and methane also occur naturally in the air and are yet classified as pollutants and you never had much of a response for that.
To be a pollutant, something has to be "introduced" into something else (ie: not be there naturally), not have a useful purpose there, and cause harm.
Whether or not the EPA has in the past *also* used bogus methodology to classify substances as pollutants doesn't make doing it again right. It just means continuing along a stupid path. At some point someone has to point out the silliness of what's going on and say enough is enough. That time has come with CO2. We could argue the points for methane and CO, because they exist naturally in the air in incredibly small amounts, and don't really do anything there other then add extra stuff into the mix. They are byproducts of other interactions, and I'm not aware of any necessary interactions they perform (but I could be wrong, in which case their classification is just that much more wrong).
In any case, CO2 is a completely different animal. It's necessary for life to exist. CO2 *must* be present in the air in significant quantities for plant life to survive on the earth. To label CO2 in the air a "pollutant" is ridiculous.
Clear enough?