I disagree that environmentalist is a failure.
Which environmentalist?LessFactMoreH ype, alias:
That CO2 cannot be a 'pollutant'? Wrong. Anything CAN and IS a pollutant in a specific context. In this case, as a greenhouse gas causing 'thermal pollution' of the planet.
The point is really that the whole claim of 'CO2 is vital to life' and 'CO2 is plant food' promoted by Earthling is not so much that it is technically wrong, but that it is IRRELEVANT to the issue of CO2 as a 'thermal pollutant'. Agreed?
Is CO2 really a thermal pollutant, "a greenhouse gas causing 'thermal pollution' of the planet?"
Yes. Obviously. Try reading the science. Nature or Science is available in your local library (I assume) for free. Beyond that you can check out the serious science web portals.
Try reading either the science journals or even these threads. They are all about 'thermal pollution' of the planet by GHGs. If you cannot understand that yet, see a doctor about your growing senility.
Both the noun and adjective are well defined. Try reading a dictionary.
I'm still waiting for official confirmation that CO2 is a "thermal pollutant," do you have it, Mr Undoubtably Spelt Fourty?