don't have the time to dissect what you're saying (hopefully i will because i like thoughtful discourse, however
.. )
You make a good point about CO2 as a natural process. And this has been my single-most important point with every person i argue, over the effects of human civilization on the planet/ecosystem. I think
wikipedia pretty much sums it up, but i'll continue.
The planet has EVOLVED into what it is now. I hope you don't question that, otherwise the discussion is over.
Now that being the case, there are natural systems for accounting for natural occurrences. A Coal-burning power plant is NOT a natural occurrence. Sure, to the earth & on the surface of things it might look and feel like a naturally-occurring forest fire. OK, but now we have far more coal plants than could be a simple forest fire, burning 24/7 (AND burning more than we need btw). On top of a constantly-burning forest fire, we are systematically removing or crippling the natural processes which would help recover from such fires. Every time we clear-cut trees to put in a parking lot or whatever, we're not just removing CO2 sequestration from the ecosystem: there are many more systems which are affected. Remember, the earth has evolved to this point: trees didn't just spring up -- they are part of a larger system, and are simply not just for turning CO2 into O2. And the more CO2 we have in the atmosphere, the more acidic the oceans, which btw are the largest ecosystem on the planet, and are responsible for 30-50% of the CO2 sequestration via phytoplankton that live there. While phytoplankton have helped slow the rate at which we pollute and warm the globe with our CO2, they too are stressed, and are not keeping things at levels that they should.
My time is up -- at the root of all things, I don't really need any more proof that we cause negative damage through the addition of unnatural processes than the fact that we have no natural (or hell, even unnatural man-made) processes that go full-cycle to keep things in balance. Go look up how many millions of years it took the natural processes of the earth to create the resources we've figured out how to use (very inefficiently) in order to power your daily commute. Tell me how the mass-expenditure of these resources by billions of humans on a daily basis does not effect our ecosystem. I'll wait.
We could all stand right next to one another yapping back and forth (like states) or we could stick our heads in the sand and act like there is no problem, or we can stop being egotistical, self-serving doofuses and try to find solutions.
I propose legislation which demands that any new business has to be completely full-circle technology. I mean this is the aim for carbon offsetting (which is kind of bullshit - ever hear of the cheating offsetting parody?) and cap and trade -- to make businesses responsible for the effects of their business on the environment.