Quote Originally Posted by DuncanONeil View Post
Where does our O2 come from then? And who is to decide what the proper temperature is for this planet? And what if they pick the wrong one?
There is no "right" temperature for the planet. That's a fallacy. What we want is the optimal temperature for human civilization. That would be the temperature which allows the most fertile areas for crop growth to remain productive. For without crop growth, we don't eat!