to be precise: we perform worse in conditions dramatically different from our natural habitat. Fish also can't breathe on land, despite much higher concentrati

to be precise: we perform worse in conditions dramatically different from our natural habitat. Fish also can't breathe on land, despite much higher concentrations of oxygen. What does that mean? Those studies are often mis-used as doom porn fodder, and are really only useful for occupational limits and employment liability, not some future forecasts for the next few centuries. The only constant thing about climate is that its constantly changes, and large fluctuations have happened many times in the past, and mammals survived. Some of the dinosaurs that survived (birds) even developed a whole different type of super efficient hemoglobin, and if CO2 keeps going up - so will we. Some people already retain large amounts of fetal hemoglobin, maybe that's the way? At any rate, the best view on climate change I've read online: http://timtyler.org/end_the_ice_age/ http://timtyler.org/end_the_ice_age/