I think most people agree that science shows the earth has gone through periods of time both hotter and colder than our current time. I think where the debate is lies in just how much on an impact man makes on these changes, and what we can (or cannot) do to keep the earth in it's current state.
The thing about geological time is how really, really slow and how long it takes for things to happen. The dinosaurs did not go extinct in a day, a year, a hundred years, a thousand years, it was much longer. I remember my geology professor in the 80s saying that "cavemen" came onto the scene there were mass extinctions of many mammals, very fast geologically. That's a small population of people with primitive weapons wiping out a lot of animals. Humans have been around for a very, very short time geologically speaking
Below is derived from something I read, that I felt helped explain my thoughts on the matter....
Truth Matters.
it is obvious that the Earth, a living system, is constantly heating or cooling. We should not deny that fact.
The earth isn't living, it is dynamic, very dynamic.......Just being technical..... : ) Since the earth is so dynamic everything is an experiment to how the earth will respond. No one really knows. Scientists like geologists look at what is going on now to try and "predict" what will happen. None of this science is exact at all.
People Matter.
Even if we can establish beyond doubt that global warming is real and it is caused by humans, that does not mean it is bad and that we should cripple ourselves or our posterity in devising “solutions” to it. Our goal should be human flourishing. Unfortunately, some think human destruction is the solution to global warming. “Population management” is the euphemistic phrase for the advocacy of mass abortion, euthanasia, and other forms of population control aimed at reducing human population to numbers not seen in centuries.
What I've heard from the geological community at the University I got my BS in Geology from said that humans are not the main cause of global warming, however, they are adding to it some. The populations in India, China, especially are unsustainable it seems like. Us Americans do live well, better than the rest of the world. The rest of the world cannot live as well as us, there aren't enough resources I believe. The big problem that I don't know is fixable is world overpopulation. Us Americans and our standard of life is pretty much insignificant to what the rest of the world is doing. I think human destruction in overpopulated parts of the world is "probably" going to happen. It will probably happen, by disease, famine, and starvation, only on a much larger scale than we are at now. War is a possibility too. I don't see population management happening. It's a very logical solution, however, I don't see it happening. Personally, population management violates our American Constitution and I am against forcibly making people have abortions or not having children, because it violates their rights. The only places that population management can happen is in totalitarian regimes, like China, and China is no good and I believe they stopped doing this. It would be great if people decided to have less kids. However, this only seems to happen in developed countries. I don't see how even China can develop to the extend the US has, but they are. Overpopulation is bad, real bad. There is no solution that I can see happening right now.
Compassion Matters
Whether we see many more storms or fewer storms, whether they are the result of global warming or cyclical climatological events, one thing is certain: They will continue to produce victims who will need our help. Compassionate action relieves the suffering of victims and we should all help where and how we can.
Right, this is what the world should do. However, the US can't help the whole world and the whole world can't live here.