greta say's she can see co2 which utter crap? if she can see c02 have a experiment to let her prove it. have one room full of oxygen and one full of co2 and don't tell her which is which and let her pick the one with co2 in? if she can't pick the the room with co2 in she will be cactus red. it's no good talking the talk if you can't walk the walk.
