Just so I have this straight - are you saying that science has proven conclusively that man is 100% responsible, and that "the debate is over" (Gore)?
If so - then what should we do? If expensive green energy is only responsible for 2% of the nations power; it's blatantly obvious that we can't stop using cost effective fossil fuels. We as a nation just aren't going to return to the stone age, and even if we did - what about all the rest of the planet's nations that will never comply? The fact is we use fossil fuels because they are the cheapest source for power (at this time).
I've heard one chief scientist from the IPCC say that (to paraphrase) " that if we shut down the entire planet's fossil fuel usage - after even 100 years the temperature difference will be negligable"
So as a planet - what are we do do?
Please excuse the length of this post, but I think this analogy is helpful to at least consider:
Suppose that a middle aged man is mindful that he's gained some weight over the years and is concerned that it's beginning to have a negative effect on his health. Even though he was athletic and physically fit in his twenties, he knows that he's led a mostly sedentary lifestyle for the past decade and his job and his personal life contains a certain amount of stress. So he consults with a doctor who gives him a physical and explains the results to him.
The doctor tells him his weight is 100 kg (220 lbs) when his ideal weight should be 75 kg (165 lbs). His blood pressure is 140/86 when it should be 120/70. His total cholesterol level is 240 when it should be 150. He further says that numerous other health indicators are similarly high and the patient can read about the details in a comprehensive report.
The doctor then recommends that he immediately quit his job and check into an intensive in-patient rehabilitation program which consists of rigorous daily exercise and powerful prescription medication. He also recommends exploring the possibility of bariatric bypass surgery to combat his obviously uncontrolled appetite.
Even though he has always had a good opinion of most doctors, the man is a little bit skeptical about this diagnosis and recommended treatment and has at least a little bit of suspicion that this doctor may be overreacting, perhaps to enhance his revenue and the revenue to his colleagues in the medical industry.
In your words:
"What are we to do?"
I would suggest that getting a second opinion is a good idea as well as doing a bit of independent research.
Let's assume that our middle aged man does seek another opinion and also does some independent research.
He might find out that even though his actual, current weight is exactly what the doctor said it was, his ideal weight is more reasonably between 85-90 kg (about 185-200 lbs). His doctor has apparently exaggerated his extra weight by 2X.
He also might discover that his high blood pressure has also been exaggerated as a man his age might have 130/80 as being normal and healthy. Also, when he examines the details of the report, he finds that while his total cholesterol is high, it's mostly the HDL (good) and is less due to the LDL (bad) cholesterol. Again, his number is correct, but the interpretation is a bit misleading. He finds something similar to be true of his other health indicators in the doctor's report.
So
now what are we to do?
Perhaps instead of assuming that his condition is a crisis that requires him to immediately quit his job and check into a clinic, he might consider: 1) changes to his diet with less salty, fatty or high carb content and more vegetables and fruit 2) daily walks along with other moderate exercise a few days a week 3) reducing the amount of stress at work and in his personal life 4) other lifestyle changes that are generally considered to have a positive effect on health
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To bring this back to the realm of global warming, I contend that, just like this fictional doctor's report, the IPCC reports are
qualitatively correct while being
quantitatively inaccurate by a measured amount.
The IPCC reports are inherently "policy" papers for world leaders (that
is their stated purpose) and are being used as a justification by some of these leaders for treating global warming as a world crisis that demands the immediate replacement of fossil fuels with inadequate, alternative energy sources and the transfer of truly enormous amounts of capital to those who've charged themselves with implementing this change.
I would suggest that perhaps a more considered - and less hasty - approach to the problem of global warming is a wiser path. Fossil fuels can be gradually phased out over time as alternative energy sources become technologically feasible and economically practical. Innovative, common sense ideas about conservation and ecological preservation can be undertaken in a measured way, on a voluntary basis by individual nations, without the intervention of an international environmental enforcement organization.