I've always found you reasonable and polite George, even when you're not.
Of course the precise mechanism of global warming, and the specific effects it might have at the earth's surface is extremely complex, as someone who has studied fluid mechanics would instinctively appreciate.
But the basic premise of AGW is not that difficult. (I summarise here not for your benefit) CO2 is a "greenhouse" gas. Economic activity over the last 100 years has liberated billions of tons of CO2 which was trapped as fossil fuel. We can measure the increased concentration in the atmosphere, and we are beginning to see the expected warming.
But what we do about it is altogether a trickier question. I suppose we should hope for the best and plan for the worst. But the worst is the end of life on earth as we know it, and I know of no plan comprehensive enough to cater for death. The fatalism in me says nothing we can do will change things enough to make a significant difference. What will be will be. Apart from the obvious (building sea defences for example) we just have to hope for the best.
But on the other hand we are moving into the second half of the age of oil, and something has to fill the gap. (And yes nuclear will or should play a significant part). If getting off oil addiction - as your President wants to do - also means less CO2 emissions which
might ameliorate the worst affects of global warming then thats a win win.
Moreover such efforts could herald a remarkable unity of purpose of all mankind. We only have one planet. Instead of fighting over scarce resources should we not share them more equitably? And in so doing safeguard future generations? For me its a three way fight between fatalism idealism and practicality.
Off on my bike to think about this more. See ya.