More nothing from you I see. Just waffle.
Once again, what is the relevance of earths atmosphere from a million years ago ?
The planet was teeming with life back then was it ? Were there 7 billion humans living here then ?
The ocean is " teeming with life " . That doesn't mean that we want the whole planet covered in ocean, does it ?
" Okay, so you are worried about the humans again, not the planet "

Derr !
Trying to distract from the 900 ppm CO2 in the room comment I see rather than address the issue. And that's from a ' climate scientist ' apparently !
Those levels in a room can be directly compared to the global atmosphere , can they ? Gee, those ' climate scientists ' are good, aren't they ? They are obviously experts in their field if they can make scientific claims like that .
" The Earth is greening, even NASA recognises this,
which is not unhealthy, ". Who says it is not unhealthy for the existing population ? The Heartland Institute ' climate scientists ' " The guys that are on the Koch payroll ?