In the Cretaceous age, 100 million years ago, when dinosaurs roamed, the Earth
was a tropical paradise, even in North Canada. It was more habitable than today, and the
existence of dinosaurs is proof. The Earth had more biomass than today, and this biomass cranked out oxygen. The Earth had more oxygen than today, which made possible flying dragons.
Today's CO2 = 420 ppm. Cretaceous CO2 = 1200 ppm.
Today's atmospheric oxygen content = 21%. Cretaceous oxygen = 35%.
Today's global temperature = 14 Celcius. Cretaceous = 24 Celsius.
In the Cretaceous, 75 kg dinosaurs could fly because of the increased oxygen. The Cretaceous had flying dragons. Today the largest flying bird is the the turkey at 15 kg. Turkeys should be revered as the largest flying bird. They're twice as large as an eagle.
If you were walking around during the Cretaceous you would feel great because of the increased oxygen. A marathon becomes easy. Human-powered flight is possible.
The assumption that increased CO2 is bad is false. There are instances in Earth's history where it was good.
In general, biomass is good. More tasty animals roaming around. We used to have mastodons. Biomass in the form of trees is the best way to capture carbon.
Let's bring Earth back to the Cretaceous. Drill baby drill! Any opinions from the Canadians? Hockey doesn't have to be abandoned because we evolved brains and can build indoor rinks. Yay evolution!
this bring up the fact that we are at a extreme low point in the production of CO2, if it falls any farther we will see plant die off at higher elevations. This is the reason we have a timber line on mountains because above that point there is to little CO2 to support larger plant life, just like the oxygen at higher elevations.