Your response is a tautology! ""right" temperature for the planet" and "optimal temperature for human civilization" is the same thing.

Worse than your food concern is without enough CO2 we don't breathe!
Being the slightest bit off can push the planet into an ice age. Just which do you think would be worse?

Quote Originally Posted by Thorne View Post
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!