During the Carboniferous period, roughly 300 million years ago, the atmosphere was far richer in CO2 than it is today. The average temperatures were far higher at that time than they are today.
The earth spent 20 million years as a complete ball of ice. It has had its surface completely covered by water, with no land whatsoever fr periods of millions of years.
The earth is a work in progress. It changes. The fauna and flora contribute to that change. Including man. Our time here as civilized humans is but a millisecond in the earth's lifespan. I think KY Jon is on the right track talking about population and food.
The issue of global warming is a phoney issue. It may be happening but efforts to stop it are a foolish waste of time. We should be adapting.....
