meemoe_uk wrote:Oh, and all of the fossil and sediment record shows the world was a very nice place to live when it was 6C warmer. Much less desert. Much more forest and grasslands.
When it was 6oC warmer there were no people. No human impacts. The world was pristine. Maybe it was nicer for reptiles and bugs, but how about for our complex civilization?
It won't be a nice place for crops, especially the grains on which our civilization is utterly dependent. They don't photosynthesize well at higher temperatures and will die. Maybe we can shift some of that agriculture farther north, but it will almost certainly be a case of too little too late.
Billions will starve.
Similarly, forests have ALREADY been deteriorating as temperatures have risen. Bugs, plant diseases, pressure from violent storms and fires.
When temperate forests disappear suddenly the soils degrade rapidly. They won't be replaced by lush jungles. More likely by thin grasses and sagebrush.
Doesn't bode well.
I find the argument that basically says, Well, we can't predict the future, so therefore we shouldn't worry about global warming, to be rather specious.