> temperatures were 9C-14C higher In such an environment, mankind might survive, but our current farming set-up won't. It might only kill 7 billion people our

> temperatures were 9C-14C higher In such an environment, mankind might survive, but our current farming set-up won't. It might only kill 7 billion people our of 7.5, no big deal. (When looked at from a few million years in the future.) > CO2 levels were 1000-2000 Indoor CO2 levels are usually double the outdoor levels. H Humans become dumb/sluggish at concentrations over 1500ppm, and nauseous at over 2000. Life will thrive, human life won't.