This is an interesting video on ancient climate and the changes it has undergone. It tells of a climatic scenario I actually hadn’t heard about before. At one point the earth was a very dry place. Animals were lower to the ground as that is where their food was. What caused the dryness? In this case one of the main factors was the fact the earth had a single super continent. Depending on the coastline some areas can be incredibly dry. The same is true today of deserts like Chile’s Atacama desert. One of the driest places on earth. So imagine an entire continent that was like that. Then, as time went by a couple of things happened. First, massive and sustained volcanic eruptions. Second, the continents drifted apart.
One this happened climate shifted in the opposite direction from very dry, to very wet. So wet in fact that it rained for 2 million years. Of course not sustained, not constant. But massive rainfall that caused massive flooding. That was the key to discover this. There was a geological layer that represented a period of time that was clearly wet. The layers went from dry rocks and dust to rocks commonly found in rivers – round and smooth – which is a clear indication of lots of flowing water.
When it comes to modern climate change the mechanisms are the same. Though some would like to say mankind is making these changes, the fact is, we are not. The switch from “global warming” to “climate change” in the rhetorical arsenal of the left was intentional. No one can deny the climate is changing because it is and it always has. It’s been warmer, and colder, than it is today and it will be again. Fact is, we simply don’t know enough about the historical climate to say that the period of time we are in now represents optimal climate for life. It could get a whole lot better in terms of growing periods. One of the most prolific times of plant growth that we do know of was during the Cambrian period when Co2 levels were 18 times higher than they are today. That was the time of the giant dinosaurs. The massive plant growth supported massive animals.
Humans would do much worse in a climate that was cooler or wetter. Imagine an ice age or global flooding on an annual basis, let alone flooding like that which lasted 2 million years. To say that the degree or two we might experience in the next few hundred years will devastate man and the earth is simply not so, nor is it even the worst case scenario.