What is the “correct” temperature for Planet Earth?
What period typified the “ideal” climate?
The climate has changed quite dramatically throughout history (going down and up without the help of man).
Even more:
Is there a range of conditions that are ideal for man’s survival and if there is such a state, is there a range of conditions in which man cannot exist?
Is mere existence enough?
What caused prehistoric fluxes in temperatures?
The folks crowing about “Darwin” managing to keep earth not just alive but smelling like a rose through major volcanic belchings and meteorite hits and dramatic ice ages... are now getting very cold feet. Or is it warm feet.